CN1348664A - Telecommunication services identification in a gateway - Google Patents

Abstract

A method and apparatus are disclosed for identifying telecommunications services. The apparatus enables call establishment between a terminal of an originating analogue network and a terminal of a digital terminating network. It comprises an input for receiving call identification information in a first format from the originating network, means for reformatting received call identification information into a second format, output means for outputting the call identification information in the second format over the terminating network; and connection means for completing an appropriate connection between the terminals.

Description

Telecommunication services identification in the gateway

Invention field

The present invention relates to be used for the method and apparatus of the required telecommunication service type of sign during setting up calling by two networks.Specifically, it relates to the method and apparatus that is used to set up the calling control that is suitable for telecommunication service, more particularly, relates to the business by the originating network sign.

Background of invention

Nowadays, carrying out message transmission by communication network is universal phenomenon.Demand faster and exchanges data more flexibly constantly increases, and it is more diversified to transmit the character of data.Communication network is in scale and also be unusual variation in nature, and the internet of exchange possibility is provided for data to global range from the Local Area Network that comprises the minority personal computer in the little company.

Communication network has different features and operating principle.Some are in particular telecommunications design, and other are devoted to more diversified data communication.Use many different network architecture and several data communication protocol to come transmission information.Some networks, for example the public switched telephone network of parts of traditional (RSTN) is still using the analog data transmissions technology, and other networks, for example Integrated Service Digital Network and be that the public land mobile net (PLMN) of example adopts digital communication technology with the GSM mobile phone network.

The network that aims at telecommunications design still uses circuit switched data communication usually, wherein distributes the particular network resource to set up and keeps connection between the network terminal user.Other network more typically is the network that is mainly the conventional data design of communication such as internet and local area network (LAN), and they use the packet switching communication agreement, does not wherein need to set up or keep special-purpose physical connection.In this network, the continuous data stream that transmit is divided into grouping, and each grouping is routed between network terminal user with a kind of independently connectionless-mode usually.

In traditional telecommunication department, there is suitable interest to provide diversified business, and new telecommunications and data communication service is provided for the network user.In data communication department, providing more, multiaspect is also increasing to the interest of telecommunication service.Thereby, between the effect of telecommunications and data communication network, produced the intersection in the evolution (or convergent).

This advolution has caused the bigger demand of transmission data between the heterogeneous communication networks.But, because the telecommunications of current existence and data network have inherent diversity, so there is the significant problem of interoperability or interconnection.

To consider between heterogeneous network, to set up the problem of communication now in more detail.By the following discussion and the description of this invention in this article after a while, will consider following interconnection situation in more detail:

A) interconnection between public switched telephone network (PSTN) and the public land mobile net (PLMN);

B) interconnection between Integrated Service Digital Network and the public land mobile net (PLMN);

And will be specifically related to provides the circuit switching telecommunication service between PSTN and the PLMN network and between ISDN and the PLMN network.It should be noted that below, term PSTN refers to pure simulation land line phone network, and term ISDN and PLMN refer to adopt fully the network of digital communication technology.But,, should be noted that in some cases, digital communication end to end is impossible between ISDN and the PLMN network although ISDN and PLMN network all are considered to pure digi-tal in itself.For example owing to this situation appears in the feature of inserting the network element that connects.Thereby, consider the interconnection problems of ISDN-PLMN especially.

When setting up the circuit switching connection for telecommunication service, must set up suitable bearer service.Bearer service is a kind of telecommunication service, and it provides the ability [list of references ITU-T1.112] of signal transmission between the user-network interface.In order between two heterogeneous networks, to carry out circuit-switched communications, must set up connection end to end.This just need set up and keep suitable bearer service between each subscriber terminal equipment and its corresponding network interface.Usually, if the different communication protocol of the network using of being discussed then also needs to carry out protocol conversion to realize communication end to end.

The type of the bearer service of setting up depends on the needed telecommunication service type of terminal use.For example, in some cases, be necessary to set up the bearer service that is suitable for traditional voice telephone calls, and in other cases, may need to be fit to the bearer service of fax or data communication.When between two heterogeneous networks, setting up communication,, wish to obtain the end-to-end indication of desired communication type in order in two networks, to realize the selection of suitable bearer service.Because data communication is different usually with signaling protocol in two networks, thereby can not obtain the signaling of desired call type between the network in a kind of direct mode.This is particularly like this under the irrealizable situation of end-to-end digital communication, for example simulate the interconnection between public switched telephone network and the public land mobile net, wherein public switched telephone network provides call type by in-band signalling, and public land mobile net uses number tape external signalling indicating call type information.

Fig. 1 illustrates the structure of GSM public land mobile net.As shown in Figure 1, the GSM structure comprises GMSC (gateway mobile switching center) (MSC) 10, and this gateway MSC is connected with fixed network and gsm wireless network such as PSTN and/or ISDN 15.The gsm wireless network comprises base station system, and base station system comprises base station controller 16 and base station transceiver station (BTS) 17.BSS (base station system) comprises coded conversion device TC (for example converting the GSM voice to).In Fig. 1, shown in TC 101 in BSC, but also can be in another part of BSS, such as in BTS 17.Travelling carriage is connected to BTS by air interface.Gateway MSC is also connected to user and terminal equipment database, and form is attaching position register (HLR) 12, Visitor Location Register (VLR) 13 and equipment identity register (EIR) 14.EIR comprises the information that relates to portable terminal, and VLR provides this locality storage of all information of need to handle calling out, and described calling is mail to or from the mobile subscriber in the band of position that relates to that specific VLR.All customer parameters of HLR 12 permanent storage travelling carriages comprise the Subscriber Number relevant with specific travelling carriage and their corresponding business types.Because PSTN is a simulation net and GSM PLMN is a digital network, they are not directly compatible.Therefore, gateway MSC 10 will have relevant interconnect function (IWF) 11, and it is a functional entity of realizing interconnection between PLMN and the PSTN/ISDN.Usually, interconnect function comprises modulator-demodulator or the modem pool that is connected with simulation PSTN network.

Here in the example of Kao Lving, the interconnect function IWF in gateway MSC 10 is used as the network interface with PSTN/ISDN and PLMN, and provides necessary protocol conversion to communicate by letter end to end with realization.

Traditionally, in the PLMN system,, promptly, identify different telecommunication services by special-purpose and certain electric communication service with specific user's number (MSISDN) by adopting many numbering plans.For example, in GSM, the user can distribute the called GSM voice of travelling carriage, data and/or fax number according to its profile at present.As previously mentioned, there is great interest to provide extra and more extensive various telecommunication service now.In future, the suggestion mobile phone user also has data and multimedia service option more at a high speed, and these business will have special Subscriber Number.

The many numbering plans of current GSM are based on GSM technical specification 09.07.According to GSM09.07, distribute a plurality of Mobile Subscriber International ISDN Number to the user, each MSISDN is relevant with the certain electric communication service.In some interconnect information (IWI) and these numbers each links and is stored among user's the HLR.In GSM 03.08, stipulated the content of interconnect information, it comprises one or two complete BC (bearing capacity) information element, the content of information element has been stipulated in GSM suggestion 07.01, and they are encoded as described in the 10.5.4.5 joint of GSM suggestion 04.08.

Also 2 interconnection that illustrate between PSTN and the PLMN with reference to the accompanying drawings in the scope of the traditional many numbering plans that will in GSM 09.07, describe now.

As shown in Figure 2, when calling originates from PSTN 15 (being data call in this example), send the initial SETUP message [step 1] that comprises called line sign (CLI).As mentioned above, HLR comprises the database items corresponding to described CLI of indicating call type.MSC 10 is to HLR 12 enquiry call types with corresponding to the bearing capacity of CLI, and send set up message to MS 18 with to MS 18 announcement incoming call and type of calls [step 2].MS 18 checked its with the compatibility (for example user profiles ability) of the bearing capacity of being asked after, by sending CALL_CONF message respond [step 3].Described message passes to PSTN[step 4 as CALL_PROC message by MSC 10].Then, MS sends ALERT message to MSC, and it has begun called subscriber's ring [step 5] to the MSC announcement, thereby MSC is connected to calling subscriber's [step 6] to ring back tone.Finally, when called subscriber answer and when having set up the connection of suitable data call, CONNECT message sends to MSC[step 7 from MS], then from MSC to PSTN[step 8].

Under the irrealizable situation of end-to-end digital communication, use such as defined many numbering plans among the GSM09.07 have been eliminated the needs to the end-to-end signaling of type of call and bearer capability information.The feature of many numbering plans is particularly useful in the travelling carriage that originates from PSTN is called.Because each telecommunication service of mobile subscriber is assigned independent telephone number, and suitable interconnect information is relevant with each number, there is no need to cross over border between PSTN and the GSM network and sends information about type of call and required bearer service.The information that how to provide about the required bearer service of the data call that originates from PSTN has been provided this method.Many numbering plans can also be simplified the interconnection with isdn network.Although the end-to-end digital communication between PLMN and ISDN is feasible in theory, yet because the attribute of IDSN or other connection network, described end-to-end digital communication is impossible at all levels sometimes.

But, should be noted that many numbering plans of definition also have great shortcoming among the GSM 09.07.It has increased the complexity that will dial the number, has increased the Subscriber Number number in using, and has increased burden to the user, because the user must remember which number is corresponding to which telecommunication service.In addition, increased the storage demand of HLR among the HLR about the storage of the information of bearing capacity, this does not wish to occur, and considers that particularly the professional number of capable telecommunications may increase in the near future.And under many numbering plans, because end-to-end mechanisms for negotiation are not provided, the optimization of bearer service (in full reportedly transmission rate) is impossible.For example, when setting up travelling carriage that PSTN starts when called, set up the bearer service of described telecommunication service with reference to the interconnect information (IWI) that is stored among the HLR, the non-end-to-end adjustment of bearer service is possible.Analogue takes place when interconnecting between some ISDN net and PLMN, special when the end-to-end digital connection of all levels can not realize.In some cases, non-best use that this may cause available transmission bandwidth for example roams under the situation of the PLMN network different with his/her home network bearing capacity the mobile subscriber.

Embodiments of the invention provide the mechanism that identifies and shine upon call identification information (for example, type of call and bearer capability information) between heterogeneous network.Such mapping scheme for example can be used for: a) optimize the carrying in many numbering plans; B) use the simplification numbering plan; Or c) realizes single numbering scheme.In order to use the single numbering scheme of the corresponding unique user number of all types of callings, need the call identification information between the mapping heterogeneous network.In an embodiment of the present invention, reach this purpose by following proposal: the function that strengthens interconnect function between the network; Allow the reformatting of call type; Strengthen the transmission of bearer capability information between the network.The needs to above-mentioned many numbering plans have been eliminated in the mapping of call type.Thereby it has simplified the operation of system from user's position, because the caller only need remember a called number.Also have, it has also reduced the demand of Subscriber Number length growth to cater to following supplementary service.And, reduced the processing burden on the HLR.On the other hand, the mapping bearer service provides and has realized other advantage that radio bearer is optimized.Be that radio bearer can be by negotiations and the coupling of PSTN/ISDN, thereby optimized the bandwidth that wireless network uses.

According to an aspect of the present invention, provide a kind of switch of calling out that is used between originating network terminal and terminating network terminal, setting up.Described switch comprises: be used to receive the input from the call identification information of first form of originating network; Be used for the call identification information format that receives is turned to the device of second form; Be used for exporting the output device of the call identification information of second form by terminating network; With the jockey that is connected that is used to finish the calling that the quilt that is suitable for described terminal room identifies.

This switch allows to eliminate and/or reduce the use of above-mentioned many numbering plans.

Call identification information can comprise call type and/or beared information.

Call type can for example relate to telecommunication service information (as telecommunication service information H.324).

Beared information allows terminating network to use the bit rate identical with originating terminal, guarantees that thus bandwidth efficiency is optimised.

Terminating network is preferably such as the cordless communication network of UMTS or GSM net.

Randomly, switch is MSC or GMSC.

Switch can also comprise the device that is used for following operation that is connected to input: determine main call type according to Subscriber Number, the first main call identification information is sent to output, and other main call identification information is sent to reformatting equipment.Two numbering systems that such switch can for example allow to adopt are distinguished the calling of main type " voice " and " data ".In this case, the all-calls of " voice " main type preferably is dynamically connected certainly, and further definite calling by " data " main type of real data type constitutes.

According to a further aspect in the invention, provide a kind of method that is used to set up the calling between originating network terminal and the terminating network terminal.This method comprises: receive the call identification information from first form of originating network; The call identification information that receives is reformatted as second form; Export the call identification information of second form by terminating network; Finish the connection of the calling of the sign that is suitable for described terminal room.

According to another aspect of the invention, providing a kind of is used for to set up the method for the calling between originating network terminal and the terminating network terminal.This method comprises: the calling of setting up predefined type; Send the call identification information of first form to terminating network from origination terminal; The call identification information that receives is reformatted as second form; Send the call identification information of second form to the terminating terminal; And set up the connection of the calling that the quilt be suitable for described terminal room identifies.

According to a further aspect in the invention, provide a kind of switching system that is used to set up calling from the originating network terminal to the terminating network terminal.This switching system comprises: the device that is used for receiving from originating network the call identification information of first form; Be used for the call identification information that receives is reformatted as the device of second form; Be used for sending the device of the call identification information of second form by terminating network; Be used to finish the jockey of the connection of the calling that the quilt that is suitable for described terminal room identifies.

According to embodiments of the invention, provide the MSC that has coded conversion device and interconnect function.This is opposite with traditional gsm system, and for example, wherein coded conversion device forms the part of base station sub-system.

With example embodiments of the invention are described with reference to accompanying drawing, in the accompanying drawing:

Fig. 1 illustrates current GSM PLMN and itself and being connected of PSTN/ISDN;

Fig. 2 illustrates and uses the data call of traditional many numbering plans from the PSTN terminal to travelling carriage to set up;

Fig. 3 explanation strengthens the foundation of the H.324 transparent video call of many numbering plans from the PSTN terminal to travelling carriage according to the use of first embodiment of the invention;

Fig. 4 illustrates the foundation that strengthens the H.324 transparent video call of many numbering plans from the PSTN terminal to travelling carriage according to the use of first embodiment of the invention, illustrates to comprise the local exchange of PSTN during call setup;

Fig. 5 illustrates the sign of the telecommunication service that is used for the PSTN originating call that MSC of the present invention is required;

Fig. 6 explanation is set up according to the data call of use single numbering scheme from the PSTN terminal to travelling carriage of second embodiment of the invention;

Fig. 7 explanation is according to the foundation of the data call of use single numbering scheme from the PSTN terminal to travelling carriage of second embodiment of the invention, and illustrates and comprise the local exchange of PSTN;

Other method that Fig. 8 explanation is set up according to the data call of use single numbering scheme from the PSTN terminal to travelling carriage of second embodiment of the invention;

Fig. 9 explanation is according to the V.8bis foundation of the data call of signaling from travelling carriage to the PSTN terminal of use of second embodiment of the invention;

Figure 10 explanation is according to the V.8 foundation of the data call of signaling from travelling carriage to the PSTN terminal of use of second embodiment of the invention;

Figure 11 explanation is according to the V.8 foundation of the data call of signaling from travelling carriage to the PSTN terminal of use of second embodiment of the invention, and illustrates and comprise the local exchange of PSTN;

Figure 12 explanation according to the use side of second embodiment of the invention to the communicate by letter foundation of data call of terminal number word from ISDN terminal to the UMTS travelling carriage;

Figure 13 explanation is according to the foundation of the data call from ISDN terminal to the UMTS travelling carriage under the irrealizable situation of end-to-end digital communication of second embodiment of the invention;

Figure 14 explanation according to the use side of second embodiment of the invention to the communicate by letter foundation of data call of terminal number word from the UMTS travelling carriage to ISDN terminal;

Figure 15 illustrates the foundation of the data call from the UMTS travelling carriage to ISDN terminal under the irrealizable situation of end-to-end digital communication according to another embodiment of the present invention;

Figure 16 explanation is according to the foundation of the data call from ISDN terminal to the UMTS travelling carriage of second embodiment of the invention, and illustrates and comprise the local exchange of ISDN;

Figure 17 explanation is according to the foundation of the data call from ISDN terminal to the UMTS travelling carriage under the irrealizable situation of end-to-end digital communication of second embodiment of the invention;

Figure 18 explanation is according to the foundation of the data call from the UMTS travelling carriage to ISDN terminal of second embodiment of the invention, and illustrates and comprise the local exchange of ISDN;

Figure 19 explanation is according to the foundation of the data call from the UMTS travelling carriage to ISDN terminal under end-to-end digital communication can not the realization situation of second embodiment of the invention;

Figure 20 explanation is according to the foundation of the data call between two UMTS travelling carriages of second embodiment of the invention;

Figure 21 explanation is according to the foundation of the data call between UMTS travelling carriage and second generation GSM travelling carriage of second embodiment of the invention;

Figure 22 explanation is according to the foundation of the data call from the PSTN terminal to travelling carriage of third embodiment of the invention;

Figure 23 illustrates in greater detail the foundation according to the data call from the PSTN terminal to travelling carriage of third embodiment of the invention;

H.324, the typical map information that Figure 24 explanation is called out.

The present invention describes in detail

The present invention relates to a kind of method and apparatus that is used for sharp unique type of call difference different type of calls of control between incompatible network.With reference to network shown in Figure 1 it is described, network shown in Figure 1 just uses the simulation PSTN net of in-band signalling and uses the GSM net of out-of-band signalling.But the present invention is not limited to the calling control of these networks, and it is equally applicable to other directly not compatible network.Suggestion the present invention is between land line network (such as PSTN or ISDN) and Universal Mobile Telecommunications System (UMTS) in a field of using future.

The example that call setup between fixed line (PSTN/ISDN) and mobile (PLMN) multimedia terminal is arranged in the explanation to the embodiment of the invention that this paper provides after a while.But, will be appreciated that the present invention never is limited to described exemplary application, it can be used for the call setup of other any kind of between the heterogeneous network in principle.

Below, suppose according to ITU-T suggestion H.324, H.324/I (H.324 appendix D) or H.324/M (H.324 appendix C) realize the related fixed terminal (PSTN/ISDN) relevant and mobile (PLMN) multimedia terminal with exemplary embodiment of the present.H.324 suggestion provides the framework of realizing the multimedia terminal, allows real-time video, audio frequency or the data or the communication of their any combination.According to the multimedia terminal of H.324 realizing can be the independent terminal equipment that is connected to fixed line PSTN/ISDN, or is used for the portable terminal of PLMN.H.324 the multimedia terminal also can be realized with PC or computer workstation.

The demand of the multimedia terminal of designing for the fixed line analog telecommunications network that is used to be connected to such as the pstn telephone system has been formulated in basic H.324 suggestion.H.324/I suggestion (H.324 appendix D) has defined equivalent demand for the multimedia terminal that is connected to the fixed-line network that digital communication is provided, described fixed-line network for example has isdn network, H.324/M (H.324 appendix C) provides H.324 some revised, and specialized designs is improved the robustness of multimedia bit stream to data transmission fault.These are revised has great role to multiplex protocol H.223.Suffix " M " representative is moved, and is used for indication: H.324/M variant H.324 is particularly suitable for moving and uses, and wherein the transmission of multi-medium data occurs on the communication channel of special fallibility.But, should be noted that suggestion use H.324/M is not limited to mobile multimedia and uses, also can be used for fixing spider lines.H.324 H.324 Jian Yi appendix C has been described and the difference H.324/M.

Though the reader will understand the multimedia terminal and realizes more details with reference to suggestion H.324, H.324/I and H.324/M, yet the summary of the functional element of multimedia terminal H.324, H.324/I and is H.324/M helped to understand the present invention.

The basic function element that is connected to the H.324 terminal of simulation PSTN is:

A) Video Codec of advising H.261 or H.263 realizing according to ITU-T;

B) according to suggestion audio codec G.723.1;

C) be used to support the data protocol used such as the data of electronic whiteboard, rest image transmission, exchange files, database access, videoconference, Remote Device Control, procotol.According to H.324, all data protocols are all chosen wantonly, but can comprise:

I) T.120 point-to-point and multiple spot videoconference;

Ii) T.84 the point-to-point rest image transmits;

Iii) T.434 the point-to-point file transmits;

Iv) H.224/H.281 Remote Camera control;

V) T.30 facisimile transmission;

Vi) text conversation agreement T.140;

D) according to ITU-T suggestion control protocol H.245, it provides signaling to realize the correct end-to-end operation of multimedia terminal;

E) basis multiplex protocol H.223, it is used for video, voice data and control information are multiplexed into single bit stream for transmission, and is used for the multimedia bit stream that receives is carried out branch usefulness; And

F) meet suggestion V.34 and V.8 (with optional V.8bis) modulator-demodulator.

H.324 the V.34/V.8/V.8bis compatible modulator-demodulator of multimedia terminal is a basic element, and it allows terminal to be provided for the simulation output of transmitting to PSTN and allow to become the analog signal conversion that receives from PSTN digital bit stream to supply further to handle and/or reproduce terminal.But modulator-demodulator also can be used as peripheral cell and realizes, in this case, it is connected as the interface between multimedia terminal and the PSTN, and the multimedia terminal is according to the V.250 operation of (as exV.25ter) control modulator-demodulator of suggestion.

When for example H.324 setting up video call between the multimedia terminal for two that connect by the pstn telephone net, calling terminal starts calls out start-up routine.Calling terminal at first asks to connect according to the standardization program of simulation (voice) phone.After traditional analog (voice) successful connection was set up, H.324 terminal entered V.8 start-up routine.Calling terminal transmission CI (calling out indication) calling tone, wherein it signals and represents " H.324 " V.8 CF (call function), and according to V.8 suggestion, " H.324 " V.8 CF has 0 * 21 value.The needed type of call of CF information element identifying call letters terminal.If calling terminal detects from the next response of compatibility modulator-demodulator V.34 at receiving terminal subsequently, then start the program that is used for described modulator-demodulator.Should be noted that, if V.8bis caller multimedia terminal and called multimedia terminal support all that the user has the chance of speaking before proceeding to mediaphone.

When V.34 modulator-demodulator foundation and hand shake procedure finish, set up data between two multimedia terminals effectively and connect.Subsequently, use H.245 the control protocol start-up system to the communication of system, logic channel is opened to the various information transmitted streams of wanting.

V.34 advising having defined the data rate that is used for end-to-end communication, scope is that 2400bps is to 33600bps.Can randomly support two peak data rates, 31200bps and 33600bps, the flank speed that must support is 28800bps.In multimedia (as video) communication, because the required big data throughout of real-time video preferably has higher data speed.Thereby 28800bps or higher data rate are considered to be suitable for most videophone application.

In the H.324/I terminal that will be directly connected to such as the fixed line digital network of ISDN, V.8/V.8bis/V.34 modulator-demodulator is replaced by series isdn user-network interface I.400.Usually V.140 realize according to suggestion by the call setup between two of the isdn network connection H.324/I compatible multimedia terminals.According to V.140 call setup three phases is arranged.In the stage 1, calling terminal sends repeated characteristic 80 bit modes so that V.140 it support to the terminal called indication.If also detect V.140 bit mode of feature in receiving data, V.140 this just indicate the terminal called support, and call setup can be proceeded.If do not receive V.140 response behind certain predetermined timeout interval, then calling terminal may return to other any non-V.140 agreement that its is supported, for example V.8 or V.8bis.In order can to return to V.8 or V.8bis, calling terminal also sends the V.8/V.8bis message (according to suggestion G.711) with digital audio encoding and intercepts V.8/V.8bis response from the respective digital coding of terminal called.

Suppose to receive V.140 response, then enter the V.140 stage 2 of call setup procedure in the stage 1.Calling terminal is determined the feature that ISDN connects now.At the multiple ISDN net that uses, comprise the network that provides 56kbps to communicate by letter now with 64kbps.Thereby, before link can be used for multimedia communication, must confirm to comprise the feature of the end-to-end digital link that data rate and bit are aimed at.In case set up the feature of digital link, just entered the stage 3 of call setup procedure.In this stage, terminal switch mode capabilities and preference pattern.H.324/I specify: call out the multimedia terminal and in BC (bearing capacity) and LLC (lower layer compatibility) information element, provide call type.Defined these information elements in the ITU-T suggestion Q.931, it has illustrated and has been used to set up, keep in isdn network and finishes the agreement that network is connected.

In case finish use call setup V.140, just use control protocol H.245 to start system between the terminal to the communication of system, as the H.324 communication between terminals that is connected to PSTN.The data rate that uses in the end-to-end communication depends on the type of the isdn network that connects two multimedia terminals.As mentioned above, provide the isdn network of 56kbps and 64kbps data rate to exist at present.V.110, suggestion allows to use lower data rate in the regulation in isdn network.V.110 many speed that V.34 middle predetermined data speed correspondence is used in the communication between the modulator-demodulator, and between the multimedia terminal that is connected to ISDN and PSTN network, provide compatible.

In mobile communication, in the multimedia terminal that H.324/M (i.e. basis appendix C H.324) realizes, V.8/V.34 modulator-demodulator is replaced by other suitable wave point.H.324/M face, because the numeral that is provided between the terminal in the PLMN network connects, the direct foundation of multimedia call is possible.The data rate that is used for multimedia communication in the future network with the compatible with ITU-T suggestion V.110 and will provide the support such as the higher rate of 64kbps.

As mentioned above, the multimedia terminal of H.324, H.324/I with H.324/M realizing according to suggestion is adapted to use different call setup procedures, and their bearer capability information is provided by different way.Different data transfer rates and communication protocol have also been used.In these differences much is owing to the feature that is designed for the network of operating the multimedia terminal produce with needing.

Many other programs of exemplary embodiment explanation of the present invention given below, they are implemented in the call setup that improves between the heterogeneous network, lay special stress on multimedia (video) phone.These comprise provides the embodiment that strengthens many numbering plans, the embodiment that allows use simplification numbering plan and the embodiment that realizes single numbering scheme.Some embodiment are specifically related to the interconnection between PSTN and the PLMN network, and other relate to the interconnection between ISDN and the PLMN network.The situation of setting up of the called and mobile-originated call of travelling carriage has been described in all cases.

In order to realize between PSTN, ISDN and the PLMN network comprehensively interconnection, suppose that always the interconnect function of gateway MSC comprises modulator-demodulator or modulatedemodulate tone group, they provide with V.8, V.34, V.110, V.140 and randomly with V.8bis compatibility.But, do not mean that restriction about the IWF function.

Be to be further noted that represented call setup procedure in the basic principle of type of call, bearer service sign and mapping and the following embodiment of the invention is equally applicable to (third generation) mobile network in current already present (second generation) and future.In entire article, current GSM (global system for mobile communications) is as the example of second generation PLMN network, and the UMTS that is advised (universal mobile telephone system) is current to carry out standardization, and it is as the example of third generation PLMN.

Under Shuo Ming the exemplary interconnect situation, the call set up signaling of (being between gateway MSC and the portable terminal) in the PLMN network is described with reference to the 9.3 standardization call setup messages that save definition of GSM suggestion 04.08 below.Call set up signaling in the UMTS mobile network will closely depend on the regulation of GSM04.08, and definition in ITU-T suggestion 24.08.Thereby suppose between two systems closely corresponding.And the call set up signaling of (being between isdn terminal device and the ISDN local switch) takes place with complete simulated mode in the isdn network, this definition in ITU-T suggestion Q.931.

Suitable ITU-T suggestion obtains GSM/UMTS and the details of signaling is set up in isdn call though the reader will consult, yet in order to help to understand the present invention, provides some the key character summaries according to the call set up signaling of GSM04.08 (5.3.0 version) here.The information content of the signal that exchanges between network and the travelling carriage in the lay special stress on call establishment, exchange comprises travelling carriage called (MT) and mobile-originated (MO) direction.The function and the information content of SETUP and CALL_CONF (call out and confirm) more particularly, will be discussed.Analog call is set up message and is used for ISDN and UMTS network, and defines in ITU-T suggestion 24.008 with Q.931 respectively.SETUP

In travelling carriage called (MT) was set up, in order to start call setup, network (for example from MSC) sent SETUP message to travelling carriage.In mobile-originated (MO) call setup, when SETUP message starts call setup when portable terminal sends to network (GSM04.08,9.3.23 joint).SETUP message comprises manyly provides the information element (IE) of calling out route and control information and about the information of the feature that will set up calling.Particularly, SETUP message can comprise nearly two bearing capacitys (BC) information element (being called bearing capacity 1 and bearing capacity 2), two lower layer compatibility (LLC) information elements and two High Layer Compatibilities (HLC) IE.

The purpose of BC information element is the bearer service that the calling that will set up is described, it is used for the compliance check that GSM04.08 appendix B defines.The 10.5.4.5 joint of GSM04.08 provides structure, content and the coding details of BCIE.

According to the 10.5.4.18 joint of GSM04.08, the purpose of lower layer compatibility information element provides the device that addressing entity (as the portable terminal in the MT calling) is used for compliance check.In the appendix B of GSM04.08, provided the details of LLCIE role in compliance check.Will illustrate as this paper back, and, select LLCIE to comprise about the requested type of call information of (as multimedia/video call H.324) according to some embodiments of the present invention.Should be noted that when setting up calling between the portable terminal among the PLMN, the LLC information element is transferred to called from caller pellucidly.But, when caller is in another network, in the time of for example in isdn network, can not guarantee that the end-to-end transmission of LLC information element is possible, thereby the end-to-end communication of call type is not determined among the LLCIE.Thereby, the invention provides the device that under the impossible situation of the end-to-end communication of LLC information element, between network, is used for the call transmission type information.

The high layer compatibility information element also is used for being provided for for the long-distance user device of compliance check.The 10.5.4.16 joint of GSM04.08 has illustrated content and the coding of HLCIE, and the use of compliance check has been described among its appendix B.According to exemplary embodiments more of the present invention that this paper illustrates later, HLCIE is used to comprise the information about requested type of call.But, under the situation of LLCIE, though the high layer compatibility information element in PLMN start and terminating side between transparent transmission, yet can not guarantee the end-to-end transmission of HLCIE between the heterogeneous network.Thereby in the HLC information element, provide in the embodiment of the invention of call type, go back generator and guarantee under the impossible situation of end-to-end transmission of HLCIE, can carry out the communication of call type.CALL_CONF

According to the 9.3.2 joint of GSM04.08, in order to confirm the incoming call request, travelling carriage sends CALL_CONF (call out and confirm) message as the response to network.Similar SETUP message, CALL_CONF message comprises many information elements.Particularly it can comprise nearly two bearing capacitys (BC) information element.But under some condition, BCIE only is included in the CALL_CONF message.Within the scope of the invention, the situation that bearing capacity message is included in the CALL_CONF message is: a) when travelling carriage wishes to set up bearer service, rather than the situation of indicating in bearing capacity 1 information element of incoming call SETUP message; Or b) loses (for example empty) at bearing capacity 1 information element of the reception relevant or when not specifying fully with incoming call SETUP message.Following exemplary embodiment of the present invention has been described the example of the use of the bearing capacity message in the CALL_CONF message when interconnecting between the heterogeneous network.

Foundation (travelling carriage is called) according to the video call from the PSTN multimedia terminal to mobile multi-media terminal of first embodiment of the invention now will be described.The first embodiment of the present invention relates to the realization that strengthens many numbering plans, and will be described in the scope that the video call from the PSTN multimedia terminal to mobile multi-media terminal is set up, shown in Fig. 3 and 4.

Fig. 3 illustrates to use and strengthens the example that the video call of many numbering plans from the PSTN terminal to travelling carriage set up.

Retrieval relates to callee's bearing capacity message of called number from HLR.After arriving access phase [step 8], the IWF modulator-demodulator begins to intercept CI (calling out indication) message, and enters with the originating terminal modulator-demodulator and carry out handshake steps [step 9].As previously mentioned, H.324 the compatible PSTN of standard uses and will send V.8CF sign indicating number 0 * 21[step 10].After only detecting the validity that V.8 incoming call encode, MSC knows that just originating terminal asking H.324 to serve still request service, for example to callee's special use H.324 the mistake of video traffic number dial audio call.

Fig. 4 explanation and the identical embodiment that illustrates about Fig. 3 show PSTN local switch (LE) role in the call setup.Term " local switch " is used to represent the telephone exchange of PSTN multimedia terminal connection.Call set up signaling between the switch in the PSTN network, and the call set up signaling between (gateway) MSC of PSTN switch and PLMN network produces serial attribute and the realization of advising having defined it of ITU-TQ.700 through the signaling network that is called Signaling System 7(SS-7) (SS7).Usually, the signaling between isdn network and the PLMN also produces through the SS7 network, and for example the inside PLMN signaling between the MSC is also like this.The call setup message that uses in the SS7 signaling system is called ISUP (ISDNYong Hubufen) message.Can in ITU-T suggestion Q.762, find the definition of the isup message of discussing about the embodiment of the invention.

With reference to Fig. 4, when PSTN local switch (LE) sent ISUP initial address message (IAM), beginning was set up [step 1] according to the video call from the PSTN multimedia terminal of first embodiment of the invention.IAM starts catching of output circuit, and sends number and the out of Memory that relates to calling route and processing.In this embodiment of the present invention, it is called that many numbering plans are used for travelling carriage, and the number of IAM indication is callee's a video traffic number.When MSC 10 received IAM, it retrieved the type of call and the bearer capability information of indicated number from HLR 12, and in SETUP message this information is sent to MS 18[step 2].In this example, as shown in Figure 4, from the type of call of HLR retrieval and bearing capacity message bearing bearing capacity 1 information element of SETUP message.

MS 18 is checking that its compatibility (as the user profiles ability) back with the bearing capacity of request responds [step 3] by sending CALL_CONF message to MSC 10.This message is finished the PSTN local switch [step 4] that message (ACM) is transmitted to calling terminal as the ISUP address.ACM receives to all addresses that the PSTNLE announcement need route the call to the callee.Next step, MS 18 sends ALERT message to MSC 10, notifies it to begin the called subscriber is carried out ring [step 5].This information returns to PSTNLE[step 6 as ISUP call progress message (CPG)], thus PSTNLE is connected to calling terminal to ring back tone.When this was called out when called subscriber answer, CONNECT message passed to MSC 10[step 7 from MS 18].This message sends back to PSTNLE[step 8 as ISUP response message (ANM)].

Behind the arrival access phase [step 8], the IWF modulator-demodulator begins to intercept [step 9] and V.8CI (calls out and indicate) message, and this message estimates to come from compatible PSTN multimedia terminal H.324.If receive V.8CF sign indicating number 0 * 21[step 10 from calling terminal], the IWF modulator-demodulator is responded, and indicates it and compatibility V.34.Subsequently, V.34 startup and hand shake procedure are activated [step 11], and finally are that end-to-end communication is selected suitable carrying.As previously mentioned, V.34 suggestion provides several data speed, from 2400bps to 33600bps, and the most suitable visual telephone of higher data speed wherein.In this example embodiment, select the V.34 data rate of 28800bps for the communication in the PSTN link of end-to-end connection.For V.110 bearer service is selected accordingly in the communication of PLMN (GSM) link of end-to-end connection.

The many numbering plans of the called enhancing of travelling carriage that are used for according to the first embodiment of the present invention provide following advantage: process is optimised by negotiations for the selected bearer service of end-to-end communication, and wherein the signaling that comes from originating network is intercepted and explained to the interconnect function of gateway MSC.

To illustrate that below the present invention uses second embodiment of single numbering scheme, wherein the mobile subscriber is assigned with single MSISDN.In order to realize single numbering plan (comprising that those end-to-end numerals connect impossible situation) under the situation about connecting in difference, extra function is provided for MSC 10, this describes in Fig. 5.In general, this function is provided by IWF, and is randomly provided by coded conversion device TC.But on the other hand, it can be provided by other parts and/or other switch of MSC in the network.

Start at PSTN, in the called foundation of travelling carriage, signaling detector 41 (comprising TC and IWF) at first detects the signaling [step 301] from PSTN.Then, it explains the in-band signalling message that relates to telecommunication service, and these message maps are become suitable number tape external signalling [step 302].After the mapping, MSC 10 provides suitable call setup message [step 303] about the type of call that is identified for portable terminal.Therefore, notice travelling carriage 18 type of calls and required bearer service, suitable calling connection is affected.The typical map information that is used for H.324 calling out provides the out of Memory of mapping process below the article back title " mapping " as shown in figure 24.

In mobile-originated, PSTN terminating call were set up, MSC10 is digital signalling outside the portable terminal receiving belt, type of call that this signaling indication will be set up and required bearer service.(mapping) becomes suitable simulation in-band signalling to MSC with the bearer service information translation the type of call that receives from MS18, and this signaling can be explained by terminating PSTN terminal.

Similar operations is essential when interconnecting between PLMN and isdn network.In this case, need the IWF of MSC outside different bands, to shine upon type of call and bearer service between the number format usually.But as explained above, end-to-end digital communication may be unworkable between PLMN and some isdn network, thereby in some cases, be necessary to send call type and receive in-band signalling to the terminating isdn network or from isdn network in band.According to the present invention, also provide function between PLMN and ISDN, to carry out type of call and the operation of bearer service information mapping to gateway MSC.

Should be realized that, according to accurate network settings, given gateway MSC can be only between PLMN and the PSTN, only between PLMN and ISDN, interconnect, or both combinations perhaps can provide the interconnection with other network.Thereby, below explanation of the present invention is not meant that the restriction of the common function of relevant this class gateway MSC.And, the use of the special information element of indicating call type and bearing capacity during the call setup (for example bearing capacity BC, the compatible HLC/LLC of high/low layer etc.), and the selection of the particular value of the special domain in these information elements should not be construed as limitation of the scope of the invention.Feature below the present invention is equally applicable to use the situation of different information elements, data field and data value.

By considering the interconnection between PSTN and the PLMN network, the example according to the call setup of second embodiment of the invention will be described at first.Two candidate's processes that are used for the called foundation of travelling carriage are described with reference to figure 6,7 and 8.Set up two schemes of mobile-originated call then with reference to Fig. 8,9 and 10 explanations.

Fig. 6 explanation is according to the call setup of use single numbering scheme from the PSTN terminal to travelling carriage of second embodiment of the invention.As mentioned above, in this embodiment, MSC10 has comprised IWF and TC.Also have, it is adapted to meet at least V.8, preferably meets V.8bis, so it can identify the type of call that comes from call function information category V.8/V.8bis.Especially, the MSC modem pool comprises the modulator-demodulator that meets V.34, so that support V.8 and randomly to support V.8bis.This modulator-demodulator is used for detecting and explaining V.8/V.8bis signaling as signaling detector 41.

When calling originates from PSTN15 (being multimedia call) in this example, initial SETUP message sends to MSC10[step 1 from the PSTN terminal].And MSC10 uses the GSM/UMTS call control signalling to send SETUP message to the relevant MS18[step 2 of institute's appropriation family number].In the example depicted in fig. 6, SETUP message is to MS18 announcement incoming call and default call type, and the type of call of giving tacit consent in this example is voice.MS18 is checking that itself and the compatible back of requested bearing capacity respond [step 3] by sending CALL_CONF message.This message is transmitted to PSTN[step 4 as CALL_PROC message by MSC 10].Then, MS sends ALERT message to MSC, begun the called subscriber is carried out ring [step 5] to the MSC announcement, thereby MSC connects ring back tone to this calling subscriber's [step 6].At last, when called subscriber answer, CONNECT message sends to MSC[step 7 from MS], and then from MSC to PSTN[step 8], and the voice of setting up acquiescence connect [step 9], and start suitable speech coding conversion in transcoder unit.

When connecting, the V.8/V.8bis signaling detector 41 of MSC 10 is explained the V.8/V.8bis signaling [step 10] that PSTN starts.The signaling that relates to telecommunication service is mapped to corresponding GSM/UMTS signaling by MSC 10.In this case, signaling detector 41 sign telecommunication service classifications are that multimedia (H.324) is called out and the transparent bearer service classification of 28.8kbps.In other cases, can select more than one bearer service: for example one is used for image, and one is used for data.If desired, the connection (comprising the startup of modulator-demodulator) in the MSC is rearranged, for example " alternately voice-and-data " business of suggestion in the GSM stage 1.The GSM/UMTS voice bearer that exports the travelling carriage voice channel to preferably is blocked to prevent the horn activation of travelling carriage, is established up to type of call.But, keep the connection between the terminal.

Next step, after successfully detecting the signaling that expectation is set by modulator-demodulator, the modulator-demodulator among MSC and the PSTN begins handshake procedure [step 11], and this can cause the connection with the data modulation rates of common unanimity.

Then, the bearing capacity of wireless network is configured to be identified for being provided with of PSTN identical, so that optimize bandwidth.MSC uses the 3rd layer of call control protocol of GSM (GSM04.08) to facilitate the modification of carrying, type of call and carrying [step 12] that MS 18 is asked by announcement.The MS return messages give MSC to finish GSM/UMTS bearing modification process [step 13].Multimedia communication between PSTN terminal and the MS18 connects to be finished.Communication occurs in 3.1kHz (is outside to the PLMN) bearer service, and it uses the classification [step 14] that comprises the IWF modulator-demodulator and optimize radio bearer.

Fig. 7 explanation comprises PSTN local switch (LE) according to the foundation that PSTN starts, travelling carriage is called of second embodiment of the invention shown in it, also use the H.324 example of multimedia call.The example of the bearer capability information exchange that relates between MSC 10 and the MS 18 also is provided.

With reference to Fig. 7, when the PSTN local switch (LE) that connects when the caller multimedia terminal sends ISUP initial address message (IAM), begin [step 1] from the H.324 call establishment of PSTN multimedia terminal.When MSC 10 received LAM, it used the GSM/UMTS call control signalling to send SETUP message to the MS 18[step 2 relevant with dialled digits].SETUP message is to MS 18 announcement incoming calls, and in this case, the type of call of acquiescence is voice.The information that is requested bearer service that relates to default call type is indicated in bearing capacity (BC) information element.

Checked with the compatibility that is requested bearing capacity (being the user profiles ability) after, MS 18 responds [step 3] by sending CALL_CONF message to MSC 10.Best, allowed by the regulation of the 9.3.2 of GSM standard 04.08 joint, CALL_CONF message comprises the information travelling carriage support, that relate to type of call and bearer service.CALL_CONF message also comprises the order of one or two BCIE, bearing capacity arrangement can indicate the special priority of selecting of bearer service.

After receiving CALL_CONF message from MS, MSC sends the ISUP address and finishes the PSTN local switch [step 4] that message (ACM) is given calling terminal.ACM announces to PSTNLE: received all address signals that need route calls to the callee.

Next step, MS 18 sends ALERT message to MSC 10, announces MSC to it and has begun the called subscriber is carried out ring [step 5].This message returns to PSTNLE[step 6 as ISUP call progress message (CPG)].Thereby PSTNLE connects ring back tone to calling terminal.When called subscriber answer was called out, CONNECT message sent to MSC 10[step 7 from MS 18].This returns to PSTNLE[step 8 as ISUP response message (ANM)], the voice of setting up acquiescence connect [step 9], and start suitable speech coding conversion in transcoder unit.

In case connect, the V.8/V.8bis signaling detector 41 of MSC begins to intercept the V.8/V.8bis signaling [step 10] that PSTN starts.Any V.8/V.8bis signaling that relates to telecommunication service that receives is mapped as corresponding GSM/UMTS signaling by MSC 10.Successfully detecting from caller H.324PSTN after the V.8/V.8bis signaling of terminal, the modulator-demodulator in MSC and the PSTN terminal begins hand shake procedure [step 11], and this can cause connecting with the data modulation rates of common unanimity.

Next step, the bearing capacity of wireless network is configured to and determines that being provided with of PSTN is identical, so that optimize bandwidth.MSC uses the 3rd layer of call control protocol of GSM (the 9.3.13 joint of GSM04.08) to facilitate the modification of carrying, and MS 18 is by announcement required type of call and carrying [step 12].The MS return messages give MSC to finish GSM/UMTS bearing modification process [step 13].Finish the connection [step 14] that is used for the multimedia communication between PSTN terminal and the MS 18 now.

That Fig. 8 explanation is started according to another PSTN of second embodiment of the invention, the called process of setting up of travelling carriage.As shown in Figure 7, in call set up signaling, comprise the local exchange of PSTN.According to the example of Fig. 8, when the PSTN local switch (LE) that connects when the caller multimedia terminal sent ISUP initial address message (IAM), the multimedia terminal call setup of H324 began [step 1].When MSC 10 received IAM, it used the GSM/UMTS call control signalling to send SETUP message to the MS18[step 2 relevant with dialled digits].SETUP message is to MS 18 announcement incoming calls, and still different with the process of setting up about the example call of Fig. 6 and Fig. 7 explanation is the type of call of not indicating acquiescence to portable terminal.In fact, the bearer capability information element of SETUP message is empty.According to this call establishment that substitutes, do not have the reception of the SETUP message of bearer capability information to accuse all to portable terminal: the calling party and can not provide the direct band that relates to required type of call and bearer service outer digital signalling outside the PLMN network.Travelling carriage forms CALL_CONF message and sends it to MSC[step 3].9.3.2 joint (or suitable UMTS suggestion) according to GSM04.08 preferably provides type of call and bearer capability information in standardized mode in CALL_CONF message.But, should be understood that to be encoded the use of special information element and information the butt formula is inessential to application of the present invention really.

After receiving CALL_CONF message, MSC sends the ISUP address and finishes the PSTN local switch [step 4] that message (ACM) is given calling terminal.Next step, MS 18 sends the ALERT message to MSC 10, and notice has begun the called subscriber carried out ring [step 5].This message returns to PSTNLE[step 6 as ISUP call progress message (CPG)], PSTNLE connects ring back tone subsequently and gives calling terminal.When called subscriber answer was called out, CONNECT message sent to MSC 10[step 7 from MS 18].This message returns to PSTNLE[step 8 as ISUP response message (ANM)].

In this, the V.8/V.8bis signaling detector 41 of MSC 10 begins to intercept the in-band signalling [step 9] that PSTN starts, and this signaling can be indicated needed type of call of calling terminal and bearer service.Especially, if V.8CF the signaling detector receives sign indicating number 0 * 21, the promptly compatible H.324 signature of the PSTN multimedia terminal of standard, the IWF modulator-demodulator is answered, and indicates it and compatibility V.34.Subsequently, V.34 beginning starts and hand shake procedure [step 10], and this can cause MSCIWF to have common consistent data modulation rates with the logic of calling out between the PSTN terminal.The bearing capacity of wireless network is set to and determines that being provided with of PSTN is identical, so that optimize bandwidth, [step 11] finished in the connection of multimedia communication end to end.In the example of Fig. 8 explanation, in the PSTN of end-to-end connection link, select the data rate of 28800bps to communicate.Select V.110 to be used for accordingly the communication of PLMN (GSM) link.

If it is incompatible that signaling detector 41 fails to identify bearing capacity and the portable terminal of suitable in-band signalling or PSTN, then set up voice and connect, or end call.

Two candidate's examples of the call setup of Fig. 9, the 10 and 11 explanations multimedia call that is used for mobile-originated, PSTN terminating according to a second embodiment of the present invention.In first candidate's example, suppose at first to set up the audio call of acquiescence, use the V.8bis signaling that produces that it is modified as multimedia call in the time more after a while then, in band, send to the PSTN multimedia terminal then from MSC.In second candidate's mobile-originated call setup example, directly use suitable V.8 signaling to set up multimedia call, MSC produces multimedia call, and transfers to reception PSTN terminal in the band.Should be noted that first candidate's example needs MSC and receive the PSTN multimedia terminal that V.8bis function is all arranged.If V.8bis any one incompatible, carry out mobile-originated multimedia call according to second candidate's example and set up.

Fig. 9 explanation is according to first alternative approach of the call setup of (mobile-originated calling) from the GSM/UMTS travelling carriage to the PSTN terminal of second embodiment of the invention.In alternative approach, at first between MS and PSTN terminal, set up the audio call of acquiescence.Then, in the time after a while, no matter be under user's facilitating, still automatically, in order to finish the conversion from the audio call to the multimedia call, the suitable PSTN terminal that V.8bis sends to.Thereby this method that mobile-originated multimedia call is set up needs MSC 10 to be adapted to meet V.8bis, so it can send and confirm the type of call that comes from call function information category V.8bis.Especially, for the PSTN interconnection, the modem pool of MSC comprises the modulator-demodulator that meets V.34, so that support V.8bis.Modulator-demodulator-transcoder unit of MSC is as signal resource and detection and explain the V.8bis detector 41 of signaling.

With reference to figure 9, when calling originates from MS18 (being multimedia call) in this example, initial SETUP message sends to MSC 10 from MS 18.In this example, suppose that SETUP message comprises the special-purpose code-point [step 1] of video traffic acquiescently in bearing capacity BC and HLC/LLC information element.MSC 10 explains the business that is requested that comes from the BC information element, and sends SETUP message to PSTN terminal 15[step 2].This paper back will be described in more detail, and under the situation of callee in data call control domain (ISDN or other PLMN), terminal called is explained the business that is requested in the HLC/LLC information element that comes from the point-to-point transmission.But under the situation of current receiving terminal in PSTN, SETUP message [step 2] is not transmitted digital call control specific information and is indicated requested bearer service for PSTN terminal 15.In fact, it uses the BC element only to indicate default call type (for example voice).The PSTN terminal responds by sending CALL_CONF message, and does not indicate the bearer service [step 3] of expection.Do not indicate the reception of the CALL_CONF message of bearer capability information effectively to notify MSC: the callee is in the PSTN network.CALL_PROC message is transmitted to travelling carriage 18[step 4 by MSC 10].Then, the PSTN terminal sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 5], so MSC connects ring back tone to calling subscriber's [step 6].Finally, when called subscriber answer, CONNECT message sends to MSC[step 7 from the PSTN terminal], then, send to MS18[step 8 from MSC], and the voice connections [step 9] of setting up acquiescence.

When travelling carriage wishes to transfer to video call (immediately or after a while in the hope of user of mobile station), PLMN tells DCE in the signaling detector 41 to send suitable V.8bis signaling (for example, the video telephone of Intel is prepared modem manual 1.1 versions and H.324 illustrated in the standard) and arrives PSTN terminal 15[step 10].When explaining suitable signaling at PSTN terminal 15 places, switch to suitable DTE-DCE pattern, and the modulator-demodulator of modulator-demodulator shake hands [step 11] among beginning and the MSC 10.This causes the data establishment of connection between the modulator-demodulator to have the identical data modulation.

Next step, the bearing capacity of wireless network is configured to and determines that being provided with of PSTN is identical, so that optimize bandwidth.MS 18 notified type of calls [step 12] of asking.MS obtains also confirming that it has received the affirmation that the original video call model changes request, and return messages give MSC to finish UMTS bearing modification process [step 13].Now, [step 14] finished in the connection of the multimedia communication between PSTN terminal and the MS 18.Communication occurs in 3.1kHz (is outside to PLMN) the bearer service classification [list of references GSM2.02], comprises the modulator-demodulator in MSC 10 interconnect functions and uses the radio bearer of optimizing.

Figure 10 explanation is according to second alternative approach of second embodiment of the invention from the call setup of GSM/UMTS travelling carriage 18 to PSTN terminals (mobile-originated call setup).More particularly, it illustrates the foundation with video call that the initialized MS of direct video starts, and its uses the data pattern that originates from MSC 10 to allow the MSC-of modulator-demodulator that V.8 signaling is set.Here, suppose that V.8 the interconnect function of MSC is adapted to meet (but not being V.8bis), so it can send and confirm from the type of call of call function information category V.8.Especially, the MSC modem pool comprise the modulator-demodulator that meets V.34 so that support V.8.This modulator-demodulator is as signal resource and be used to detect and explain the V.8 detector 41 of signaling.

With reference to Figure 10, when calling originates from MS 18 (being multimedia call) in this example, initial SETUP message sends to MSC 10[step 1 from MS 18].In this case, example as shown in Figure 9 supposes that the SETUP message that sends to MSC 10 from MS 18 comprises the special-purpose code-point of video traffic acquiescently bearing capacity BC and HLC information element.

Receive SETUP message from travelling carriage, MSC 10 send successively SETUP message to by the relevant PSTN terminal 15[step 2 of appropriation family number].SETUP message in this case, is not indicated the type of call of acquiescence to the 15 announcement incoming calls of PSTN terminal.PSTN terminal 15 responds [step 3] by sending CALL_CONF message, and this message is transmitted to travelling carriage 18[step 4 as CALL_PROC message by MSC 10].Then, the PSTN terminal sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 5], so MSC connects ring back tone to calling subscriber's [step 6].Next step, CONNECT message sends to MSC[step 7 from PSTN terminal 15], MSC sends CONNECT message successively to travelling carriage [step 8] then.

In this point, MSC indication signaling detector 41 produces in-band signalling with required type of call and the bearer service of sign caller travelling carriage to the PSTN terminal.Thereby in current example, V.8CI the IWF modulator-demodulator begins to produce (calling out indication) message, comprises that expectation is from compatibility 0 * 21CF sign indicating number [step 9] of the PSTN multimedia terminal of standard H.324.If the signaling detector receives the suitable response from PSTN subsequently, for example indicate terminal called in conjunction with compatibility modulator-demodulator V.34, then IWF begins V.34 to start and hand shake procedure, causes MSC and calls out being connected between the PSTN and have data modulation rates [step 10] consistent with each other.The bearing capacity of wireless network is configured to and determines that being provided with of PSTN is identical, so that optimize bandwidth, [step 10a] finished in the connection of end-to-end communication.In this case, in the PSTN link, set up the V.34 data modulation rates of 28.8kbps, use accordingly V.110 data rate in PLMN (GSM) link.

If signaling detector 41 does not receive from PSTN response, indicate it communicating with compatibility modulator-demodulator V.34, best, after given overtime or retry period, MSC facilitates the foundation of the audio call between MS and the PSTN terminal.Setting up end to end then, voice connect [step 10b].This offers system's ability that " retreats (fall-back) ", does not support to prevent call failure under the type of call of caller PLMN terminal request and/or the bearer service situation at for example called PSTN.

The call setup situation of Figure 11 explanation and identical mobile-originated, the PSTN terminating that illustrates about Figure 10 shows PSTN local switch role.

Now illustrate that with reference to Figure 12 to 19 it has covered various call setup situations, comprises the calling that travelling carriage is called and mobile-originated according to the ISDN of second embodiment of the invention and the call setup between the PLMN terminal.

Figure 12 to 15 has illustrated the call setup between ISDN and the PLMN network, supposes that bearing capacity BC and HLC information element comprise the special-purpose code-point of video traffic acquiescently.Figure 12 and the call setup (travelling carriage called) of 13 explanations, and Figure 14 and the call setup (mobile-originated calling) of 15 explanations from mobile multi-media terminal to the ISDN multimedia terminal from the ISDN multimedia terminal to mobile multi-media terminal.How Figure 13 and 15 explanations set up multimedia call between ISDN and PLMN network when digital signalling can not be realized outside end-to-end (point-to-point) band.

Call setup between Figure 16 to 19 explanation ISDN and the PLMN network supposes to comprise acquiescently in bearing capacity BC and the HLC information element the special-purpose code-point of video traffic.Figure 16 and the call setup (travelling carriage called) of 17 explanations, and Figure 18 and the call setup (mobile-originated calling) of 19 explanations from mobile multi-media terminal to the ISDN multimedia terminal from the ISDN multimedia terminal to mobile multi-media terminal.Figure 17 and 19 explanations outside end-to-end (point-to-point) is with digital communication can not the time how between ISDN and PLMN network, to set up multimedia call.

Each situation of the ISDN/PLMN call setup situation of introducing above with reference to the accompanying drawing detailed consideration.

Figure 12 explanation has the travelling carriage called number digit territory call setup of point-to-point HLC, and the use of the called single numbering scheme of H.324 type of call and travelling carriage is indicated in the whole world acceptance of suppose the HLC information element.When multimedia call originated from ISDN terminal, initial SETUP message was sent to gateway MSC 10[step 1].SETUP message comprises the indication of called line sign (CLI) and requested type of call/bearer service.In this example, suppose that SETUP message comprises the special-purpose code-point of video traffic acquiescently in bearing capacity BC and HLC information element, and ISDN terminal request UDI (unristricted digital information) 64kbps bearer service.The end-to-end transmission of supposing the HLC information element is possible, and requested bearer service and HLC information element that MSC 10 explains and transmits in the SETUP message are given travelling carriage 18[step 2].Travelling carriage responds [step 3] by sending CALL_CONF message to MSC after having checked the compatibility (for example user profiles ability) of itself and requested bearing capacity.If travelling carriage is not supported requested bearer service, it provides the indication of candidate's bearer service in CALL_CONF message, for example V.11028.8kbps carrying.This message is given ISDN terminal [step 4] by MSC 10 as the CALL_PROC forwards.Next step, MS sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 5], and MSC connects ring back tone to calling subscriber's [step 6] subsequently.Support that at MS 18 when called subscriber answer, CONNECT message sends to MSC[step 7a from MS under the situation of requested bearer service].Then, MSC sends CONNECT message to ISDN terminal [step 8a] and carry out connection [step 9a] according to the carrying of initial request.If portable terminal is advised candidate's carrying in CALL_CONF message, then call out to connect and shown in step 7b, 8b and 9b, carry out the foundation that causes the candidate to be carried.

Figure 13 explanation according to the use single numbering scheme of second embodiment of the invention from ISDN terminal 15 to travelling carriage 18 call setup.Shown in the example of Figure 12, suppose bearing capacity BC and HLC information element, to comprise the special-purpose code-point of video traffic acquiescently from the initial SETUP message that ISDN terminal sends.But, in this case, suppose that also end-to-end digital communication is impossible.As explained before, network can not send out-of-band signalling message end-to-endly, thereby in this embodiment, V.140 coded conversion device among the MSC 10 is adapted to meet and (uses V.8/V.8bis in the PSTN network, it is an ISDN in-band signalling agreement), so it can confirm type of call from the V.140 information with interior transmission.Particularly, modulator-demodulator-coded conversion device 41 of MSC is adapted to detect the V.140 signaling among the LSB of the 56/64kbps PCM modulating data of normalized explaining V.140.Thereby modulator-demodulator-coded conversion device of MSC is as detecting and explain the V.140 signaling detector 41 of signaling.

When calling originated from ISDN terminal 15 (being multimedia call) in this example, initial SETUP message sent to MSC 10[step 1 from ISDN terminal].MSC 10 sends SETUP message successively to the relevant MS 18[step 2 of the institute's appropriation family number that uses the GSM/UMTS call control signalling].SETUP message is announced the type of call of incoming calls and acquiescence to MS 18: be the voice (GSM02.02) with 3.1kHz bearer service classification in this case.MS 18 responds [step 3] by sending CALL_CONF message after having checked the compatibility of itself and requested bearing capacity.This message is given ISDN[step 4 by MSC 10 as the CALL_PROC forwards].Then, MS sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 5], and MSC connects ring back tone to calling subscriber's [step 6] subsequently.Finally, CONNECT message sends to MSC[step 7 from MS], send to ISDN[step 8 from MSC again].When called subscriber answer, the voice of setting up acquiescence connect [step 9], and speech coding conversion suitable in the transcoder unit is activated.

One connects, and the V.140 signaling [step 10] that ISDN starts is just intercepted and explained to the V.140 signaling detector 41 of MSC 10.MSC 10 is mapped to corresponding GSM/UMTS signaling to the detected signaling that relates to telecommunication service.In this case, detector 41 sign telecommunication service classifications are that multimedia (H.324) is called out and the transparent UDI bearer service of 64kbps classification, and MSC facilitates the modification of the carrying of using the 3rd layer of call control protocol.

Then, the bearing capacity of wireless network is configured to and determines that being provided with of ISDN is identical, and MS18 is apprised of the requested type of call [step 11] in the BC information element.The MS return messages give MSC to finish GSM/UMTS bearing modification process [step 12].[step 13] finished in the connection of UDI multimedia communication between PSTN terminal and the MS18.

Figure 14 provides two examples of call setup mobile-originated, ISDN terminating, supposes the digital communication of point-to-point.In other words, suppose the possibility of digital communication end to end,, for example connect the SS7 network of ISDN local switch and gateway MSC promptly by ISDN, PLMN and any network between the centre.In first example, the UDI bearer service of mobile terminal request 64kbps in second example, is asked V.110/28.8kbps bearer service.In both cases, suppose the compatible requested type of call/bearer service of terminal called.

Follow call setup situation shown in Figure 14, when multimedia call originated from portable terminal, initial SETUP message sent to gateway MSC 10[step 1a/1b].SETUP message comprises the indication of called line line (CLI) and requested type of call/bearer service.In addition, suppose that SETUP message comprises the special-purpose code-point of video traffic acquiescently in bearing capacity BC and HLC information element.Suppose information element end-to-end Digital Transmission may, MSC 10 explains requested type of call in the SETUP message and bearer service information and it is transmitted to ISDN terminal [step 2a/2b].ISDN terminal responds [step 3a/3b] by sending CALL_CONF message to MSC.MSC 10 sends CALL_PROC message then to carry out with indicating call foundation to caller travelling carriage [step 4a/4b].

Next step, ISDN terminal sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 5a/5b], and MSC connects ring back tone to calling subscriber [step 6a/6b] subsequently.Finally, when called subscriber answer, CONNECT message sends to MSC[step 7a/7b from ISDN terminal].MSC sends CONNECT message then and gives travelling carriage [step 8a/8b], and sets up requested bearer service [step 9a/9b] for end-to-end communication.

Figure 15 illustrate second embodiment of the invention under the impossible situation of end-to-end communication of HLC from the travelling carriage to the ISDN terminal call setup of (mobile-originated call).In this embodiment, the coded conversion device among the MSC 10 is adapted to meet V.140, so as it can the indicating call type as the V.140 information that is sent out in the band.Especially, MSC modulator-demodulator-coded conversion device 41 can be indicated the V.140 signaling among the LSB of the 56/64kbps PCM modulating data of normalized explaining V.140.Thereby modulator-demodulator-coded conversion device of MSC is as sending, detect and explain the V.140 signaling source 41 of signaling.

When calling originated from MS 18, initial SETUP message was sent out, and in this example, SETUP message comprises the special-purpose code-point [step 1] of video traffic acquiescently in bearing capacity BC and HLC information element.The business that is requested that MSC 10 explains from BC information, under the best circumstances, the callee explains it in the HLC information element that the end terminal can be transmitted from point to points in digital call control domain (ISDN, other PLMN).But, in not meeting the network environment of ISUP, do not transmit digital call control specific information to ISDN terminal from the SETUP message [step 2] that MSC sends.ISDN terminal responds [step 3] by sending CALL_CONF message.

Like this, know the callee in ISDN or PSTN network, MSC 10 finishes and connects signaling [step 4 is to 8].When audio call H.324 begins and directly the video traffic signaling can be from MS 18 predictions, the user data of acquiescence (being voice in this case) exchange coded conversion device-voice modem unit 41[step 9 of passing through MSC 10].When travelling carriage wishes to begin to transfer to video call (immediately or after a while in the hope of user of mobile station), V.140 the coded conversion device in the PLMN command signaling detector 41 sends suitable V.140 (and/or V.8bis signaling simultaneously) of preparing modem manual with the Intel visual telephone and H.324 illustrating in the standard to ISDN terminal 15[step 10].When signaling was explained in ISDN terminal, it exchanged to suitable UDI pattern, starts Video Applications at its end.

Next step, the bearing capacity of wireless network is configured to and determines that being provided with of PSTN is identical, so that optimize bandwidth.MS18 is announced is requested type of call [step 11] in the BC information element.MS obtains also confirming that it has received the affirmation that the original video call model changes request.The MS return messages give MSC to finish GSM/UMTS bearing modification process [step 12].Now, [step 13] finished in the connection of the multimedia communication between MS 18 and the ISDN terminal.Communication occurs in the 64kbps UDI bearer service classification.

Figure 16 explanation is according to the use single numbering scheme of the second embodiment of the invention call setup of (travelling carriage is called) from the ISDN terminal to the travelling carriage, and illustrates and comprise ISDN local switch (LE) in the call setup.The example of Figure 16 illustrates the example that multimedia (video) is called out again.In this case, supposing to send to the bearing capacity BC of gateway MSC and the LLC information element from ISDN terminal provides call type acquiescently, and this information is in initial call SETUP message.Example among this and Figure 12 to 15 differs widely, and call type is carried in BC and the HLC information element among Figure 12 to 15.At Figure 16, also suppose ISDN and PLMN, make that the LLC information element can be by end-to-end communication between network.

Q.931 realize call control signalling between the ISDN local switch that ISDN terminal and its connects according to ITU-T suggestion, advise providing standardized signaling for the call setup in the isdn network, maintenance and disconnection.Q.931 the isdn call control procedure of definition is substantially similar to the process of using in the GSM call control signalling in.And under the situation of PSTN and PLMN interconnection, the ISDN local switch generally is connected to the gateway MSC of PLMN network by the SS7 network, this definition in the suggestion of ITU-TQ.700 series.ISUP (ISDNYong Hubufen) message of definition is finished the call control signalling between ISDN local switch and the gateway MSC in the use ITU-T suggestion Q.762.

When Q.931SETUP ISDN terminal sends message, begin call setup [step 1] from ISDN terminal to the PLMN portable terminal.In this example, suppose that the special-purpose code-point of video traffic is included among the bearing capacity BC and LLC information element of SETUP message acquiescently.When Q.931 the ISDN local switch received SETUP message, it sent the gateway MSC[step 2 that ISUPIAM (initial address message) gives PLMN].When in this example via the end-to-end digital signalling of ISDN, SS7 and PLMN network be assumed to be may the time, MSC can receive direct out-of-band signalling, the content of its indication LLC and BC information element.MSC explains and relates to the information that is requested type of call and bearing capacity that receives relevant with IAM message, and convert thereof into the form that is adapted at transmitting among the PLMN, the for example GSM SETUP message [step 3] that saves as 9.3.23, or its UMTS equivalence according to GSM04.08.Therebetween, message informing calling terminal call setup is carrying out [step 4] to the ISDN local switch by sending Q.931CALL_PROC.

Receive SETUP message, travelling carriage is checked it and is requested the compatibility of type of call and bearing capacity, and beams back CALL_CONF message and give MSC[step 5].MSC sends the ISUP address subsequently and finishes message (ACM) to the ISDN local switch, has received [step 6] so that indication routes the call to all required address signals of callee.Next step, portable terminal sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 7].Q.931ALERT this message send message to the caller ISDN terminal for ISDN local switch [step 8], ISDN local switch as ISUP call progress message (CPG) via the SS7 forwarded successively, thereby and ring back tone is connected to the calling subscriber.

When called subscriber answer, CONNECT message passes to MSC from MS, and is transmitted to the ISDN local switch as the ISUP response message.Finally, Q.931CONNECT the ISDN local switch sends message to the calling subscriber, and sets up the calling that is suitable for being discussed and connect.If travelling carriage can the support call type and called out the carrying that ISDN terminal begins to ask, call out access phase and proceed according to the indication of step 10a, 11a, 12a and the 13a of Figure 16.In the example of Figure 16, call out ISDN terminal and begin to ask to use the multimedia (video) of 64kbpsUDI bearer service to call out.If portable terminal can not provide needed bearer service (for example it does not support required data rate), when MS replys initial SETUP message, seem obvious for MSC in step 5.As explained earlier, according to the 9.3.2 joint of GSM04.08, portable terminal can provide candidate's bearer capability information in CALL CONF message.Last calling connects to be proceeded according to step 10b, 11b, 12b and 13b, in this example, causes the V.110 28.8kbps carrying of end-to-end connection to be set up.

Figure 17 also illustrates use single numbering scheme according to the second embodiment of the invention call setup of (travelling carriage is called) from the ISDN terminal to the travelling carriage.In the example of Figure 16, suppose that the special-purpose code-point of video traffic is included among the bearing capacity BC and LLC information element of SETUP message acquiescently.But, in this case, suppose that end-to-end digital out-of-band communication is impossible, for example because the attribute of go-between.Use above-mentioned single numbering scheme call setup in order to realize in this case, the interconnect function IWF of gateway MSC is called therebetween at call setup.Especially, IWF is suitable for meeting V.140, so that it sends the V.140 type of call of information in can carrying with affirmation.Especially, modulator-demodulator-coded conversion device 41 of MSC is adapted to detect the V.140 signaling among the LSB of the 56/64kbps PCM modulating data of normalized explaining V.140.Thereby in this case, modulator-demodulator-coded conversion device of MSC is as detecting and explain the V.140 signaling detector 41 of signaling.

When calling originates from ISDN terminal 15 (being multimedia call in this example), Q.931 SETUP message is sent to MSC 10[step 1 from ISDN terminal].Relating to the information that is requested type of call and bearer service Q.931 is placed among the SETUP message BC and LLC information element.MSC 10 sends SETUP message then to the relevant MS 18[step 2 of the institute's appropriation family number that uses the GSM/UMTS call control signalling].The type of call of SETUP message informing MS 18 incoming calls and acquiescence: be voice (GSM02.02) in this case with 3.1kHz bearer service classification.MS 18 responds [step 3] by sending CALL_CONF message after having checked it and being requested the compatibility of bearing capacity.This message is given ISDN[step 4 by MSC10 as the CALL_PROC forwards].Then, MS sends ALERT message to MSC, notifies it to begin the called subscriber is carried out ring [step 5], and MSC connects ring back tone to calling subscriber's [step 6] subsequently.Finally, CONNECT message sends to MSC[step 7 from MS], again from MSC to ISDN[step 8].When called subscriber answer, the voice of setting up acquiescence connect [step 9], and speech coding conversion suitable in the transcoder unit is activated.

One connects, and the V.140 signaling [step 10] that ISDN starts is just intercepted and explained to the V.140 signaling detector 41 of MSC 10.MSC 10 is mapped to corresponding GSM/UMTS signaling to the detected signaling that relates to telecommunication service.In this embodiment, MSC facilitates the modification of the carrying of using the 3rd layer of call control protocol.In other words, detector 41 sign telecommunication service classifications are called out and the transparent UDI bearer service of 64kbps classification as multimedia (H.324).

Then, the bearing capacity of wireless network is configured to and determines that being provided with of ISDN is identical, and MS 18 is apprised of and is requested type of call [step 11] in the BC information element.The MS return messages give MSC to finish GSM/UMTS bearing modification process [step 12].Now, [step 13] finished in the connection of the UDI multimedia communication between ISDN terminal and the MS 18.

Figure 18 explanation is according to two examples of the call setup of (mobile-originated) from the travelling carriage to the ISDN terminal of second embodiment of the invention.It comprises the ISDN local switch when also being illustrated in call setup, the gateway MSC that occurs in the PLMN network and the signaling between the ISDNLE are shown.In this case, also suppose end-to-end digital communication possibility, for example the gateway MSC of SS7 network linking PLMN and ISDN local switch.

As in all situations in front, mentioned that specially the video call between the multimedia terminal in two networks is set up.In first example, the step 1a to 13a among Figure 18 illustrates, and supposes that calling mobile terminal (and PIMN) can support to use the visual telephone of the UDI carrying of 64kbps data rate, corresponding to the peak data rate that can be used in the isdn network communicating by letter.When available peak data rate can be used in end-to-end communication in the ability of the ability (and PLMN) of travelling carriage coupling ISDN and the system, it is best that this situation is considered to.Be assumed to be such as the travelling carriage of the third generation PLMN network design of UMTS system and can support this bearer service.

In second example that mobile-originated call is set up, step 1b to 13b illustrates among Figure 18, and lets call travelling carriage and/or PLMN do not support the UDI carrying of 64kbps data rate.Thereby MS request uses the bearer service of lower data speed to set up video call, is the bearer service of 28.8kbps V.110 in this case.Thereby the ability that the data rate that is used for end-to-end communication is moved platform and/or PLMN limits.Above-mentioned situation can take place when using first generation multimedia mobile terminal in the second generation PLMN network that the data rate that is suitable for visual telephone is being provided.

Shown in the step 1a to 13a among Figure 18, send SETUP message when the PLMN terminal, begin call setup [step 1a] from the PLMN travelling carriage to ISDN terminal, observe 9.3.23 joint or its UMTS equivalence of GSM suggestion 04.08.In example call shown in Figure 180 is set up, suppose that the special-purpose code-point of video traffic is included among the bearing capacity BC and LLC information element of SETUP message acquiescently.

The MSC of PLMN receives SETUP message, and it sends ISUP initial address message (IAM) subsequently and gives ISDN local switch [step 2a].When in this example via the end-to-end digital signalling of PLMN, SS7 and isdn network be assumed to be may the time, ISDNLE receives direct out-of-band signalling, the content of indication LLC and BC information element.Q.931 it send SETUP message then to called ISDN terminal, BC and the requested type of call in the LLC information element and the bearing capacity [step 3a] of indication SETUP message.Therebetween, gateway MSC is carrying out [step 4a] by sending CALL_CONF message informing caller travelling carriage call setup.

Receive SETUP message, ISDN terminal is checked the compatibility of itself and requested type of call and bearing capacity, and beams back Q.931 CALL_CONF message and give ISDN local switch [step 5a].The ISDN local switch sends the ISUP address subsequently and finishes message (ACM) to MSC, receives [step 6a] so that indicate this calling to be routed to all required address signals of callee.Next step, ISDN terminal sends ALERT message to the ISDN local switch, notifies it to begin the called subscriber is carried out ring [step 7a].This message is given MSC[step 8a as ISUP call progress message (CPG) via the SS7 forwarded], MSC sends ALERT message successively to caller travelling carriage [step 9a], thereby and ring back tone is connected to the calling subscriber.

When called subscriber answer, Q.931 CONNECT message sends to MSC[step 10a from ISDN terminal], and be transmitted to MSC[step 11a as ISUP response message (ANM)].Finally, MSC sends CONNECT message to calling subscriber [step 12a], and sets up the connection [step 13a] that is suitable for the calling of discussing, and in this case, uses the UDI bearer service of 64kbps data rate.

In the candidate's call setup situation shown in Figure 18 step 1b to 13b, call setup carries out to be similar to just described mode.But in this case, travelling carriage is not supported 64kbps UDI carrying, but indicates it to the V.110 support of 28.8kbps bearer service in initial SETUP message.

Figure 19 explanation is according to the call setup of (mobile-originated call setup) from the travelling carriage to the ISDN terminal of second embodiment of the invention, and the end-to-end communication of LLC information element is impossible in this case.In this embodiment, the coded conversion device among the MSC 10 is adapted to meet V.140, so as it can the indicating call type as the V.140 information that sends in the band.Especially, modulator-demodulator-coded conversion device 41 of MSC can be indicated the V.140 signaling among the LSB V.140 normalized explaining, 56/64kbps PCM modulating data.Like this, modulator-demodulator-transcoder unit of MSC is as transmitting, detect and explain the V.140 signaling source 41 of signaling.In this case, call setup carries out to be similar to about the illustrated mode of Figure 15.

The situation that Figure 20 and 21 explanations are set up according to the mobile-to-mobile call of second embodiment of the invention uses multimedia call to set up as example again.Figure 20 illustrates two call setups between the UMTS travelling carriage, and shows the ISUP call set up signaling that adopts between the MSC in the PLMN network.Figure 21 illustrates the call setup between UMTS travelling carriage and the second generation (as the GSM) travelling carriage.

Now will illustrate and allow to use the third embodiment of the invention of simplifying numbering plan.The two call setups of numbering plan from the PSTN terminal to travelling carriage are used in Figure 22 and 23 explanations.This embodiment provides hybrid arrangement, wherein only uses two numbers: one is used to identify audio call, and another is used for identification data and calls out.As in the arrangement of Fig. 2, HLR 12 has comprised the database items corresponding to the called line sign of indicating call type.But in this embodiment, this database has only two items: an indicating call type is voice, and another indicating call type is data.If type of call is voice, 101 pairs of PSTN initial spikes of the TC of MSC 10 carry out code conversion, and send the signal of changing by wireless network.But,, determine the type of reality by the IWF 11 of reference Fig. 5 explanation if it is data.

Now illustrate in greater detail call setup among this embodiment with reference to Figure 22 and 23.

Figure 22 illustrates the call setup of audio call.When calling originated from PSTN 15, the initial SETUP message that comprises called line line (CLI) was sent out, and is audio call [step 1] in this example.As mentioned above, to comprise corresponding to the indicating call type be the database items of the described CLI of voice to HLR.MSC 10 is to the type of call (bearing capacity) of HLR 12 inquiries corresponding to CLI, and transmission SETUP message is audio call [step 2] to MS 18 to notify its incoming call and type of call.MS 18 checked with the compatibility that is requested bearing capacity after, respond [step 3] by sending CALL_CONF message.This message is transmitted to PSTN[step 4 as CALL_PROC message by MSC 10].Then, MS sends ALERT message to have begun the called subscriber is carried out ring [step 5] to notify it to MSC, thereby MSC is connected to calling subscriber's [step 6] to ring back tone.Finally, when called subscriber answer, CONNECT message sends to MSC[step 7 from the MS terminal], then from MSC to PSTN[step 8], and set up the connection be suitable for audio call.

Figure 23 illustrates the call setup of data call.When calling originated from PSTN 15 (being multimedia call) in this example, the initial SETUP message that comprises called line line (CLI) was sent out, and is data call [step 1] in this example.As mentioned above, to comprise corresponding to the indicating call type be the database items of the described CLI of data to HLR.MSC 10 is to the HLR12 inquiry type of call (bearing capacity) corresponding to CLI, and send SETUP message to MS18 to notify its incoming call and default call type (for example default data type) [step 2].MS 18 responds [step 3] by sending CALL_CONF message having checked with the compatible back that is requested bearing capacity.This message is transmitted to PSTN[step 4 as CALL_PROC message by MSC 10].Then, MS sends ALERT message to MSC, notify it to begin the called subscriber is carried out ring [step 5], thereby MSC is connected to calling subscriber's [step 6] to ring back tone.Finally, when called subscriber answer, CONNECT message sends to MSC[step 7 from the MS terminal], then from MSC to PSTN[step 8], and the connection [step 9] of setting up acquiescence.

Next step, MSC attempts to determine actual data type.In this example, one connects, and the V.8/V.8bis signaling detector 41 of MSC 10 is just explained the V.8/V.8bis signaling [step 10] that PSTN starts.MSC 10 is mapped to corresponding GSM/UMTS signaling to the signaling that relates to telecommunication service, and in this embodiment, MSC facilitates the modification of the carrying of using the 3rd layer of call control protocol of GSM (the 9.3.13 joint of GSM04.08).In other words, in this case, signaling detector 41 sign telecommunication service classifications are multimedia call (H.324), and bearer service is as the transparent bearer service classification of 28.8kbps.If desired, the connection among the MSC (comprising the startup of modulator-demodulator) is rearranged, and for example is " alternately voice-and-data " business of GSM stage 1 suggestion.The GSM/UMTS voice bearer that exports the travelling carriage voice channel to preferably is blocked to prevent the horn activation in the travelling carriage, is established up to type of call.But, keep the connection between the terminal.

Next step carries out modulator-demodulator shake hands [step 11].Then, the bearing capacity of wireless network is configured to and determines that being provided with of PSTN is identical, so that optimize bandwidth.The type of call [step 12] that MS 18 is asked by announcement.The MS return messages give MSC to finish GSM/UMTS bearing modification process [step 13].[step 14] finished in connection about the multimedia communication between PSTN terminal and the MS 18 now.Use the radio bearer of optimizing to communicate via the MSC modem pool.

Mapping

The typical map operation that MSC carries out will be described now, at first from V.8 to GSM, randomly be mapped as V.8bis then.As what will know, this mapping is exemplary, can similarly shine upon for the future network such as UMTS.The GSM signaling derives from ISDN usually, and promptly it is advised based on ITU-TQ.931.3G telecommunication system such as UMTS also is like this, and therefore, they and this class mapping method are compatible especially.

In this embodiment, the information mapping that relates to telecommunication service becomes HLC (high-rise ability) information element among the GSM (based on Q.931).Similarly, the information mapping that relates to bearer service becomes BC (bearing capacity) information element among the GSM.Provide in the explanation that the more details of HLC, BC and LLC (low layer capabilities element) are shone upon below.

Below general introduction and telecommunication service type definite relevant V.8, V.8bis with the GSM signaling information.Quote and relate to following document, by reference its content is combined in this.

[1] ITU-T advises F.721 (08/92)---be used for the visual telephone telecommunication service of ISDN

[2] ITU-T advises F.700 (07/96)---the arrangement furthermore proposes of audiovisual/multimedia service

[3] ITU-T advises V.8 (02/98)---begin the process of transfer of data dialogue by public telephone switching network

[4] ITU-T suggestion V.8bis (08/96)---between data circuit terminating equipment (DCE) and between the data terminal equipment (DTE) by general switch telephone network or rent the sign of commonality schemata of the operation that the point-to-point telephone-type circuit carries out and the program of selection

[5] ITU-T advises H.324 (2/98)---the terminal of low bit speed rate multimedia communication

[6] digital cellular telecommunication systems (stage 2+)---the 3rd layer of standard of mobile wireless interface, GSM04.08 version 6.2.0,1997 issues

[7] ITU-T advises H.245 (2/98)---the V.8 signaling [3] that control protocol for multimedia communication is mapped

[3] V.8 the table 2 in has listed information available classification in the signaling.Can see as us, eight hytes of calling-function have 3 optional bits, and the table 3 in [3] illustrated how these optional bits are used to identify the specific call function.As mentioned above, Q.931HLC the information of explaining from the call function classification can be mapped as information element so that the information of GSM network about telecommunication service or call function and bearer service to be provided.

[3] table 4 indication PSTN V-series modulating mode rather than availability V.90 in.When having only modulating mode to use with the call function that is instructed to and it will transmit described ability and give remote dce device the time, just show availability.For example, use if use H.324, then V.34 the use of full-duplex mode is essential, and other option is not instructed to.In order to find the common modulation pattern, modulation mode information only is used between the DCE.After selecting the common modulation pattern (as V.34), MSC/IWF is according to the definite data rate (for example 28.8kbps) from modulator-demodulator of the quality quality (BER) of PSTN circuit.The GSM that above-mentioned V.8 signaling is mapped to by MSC (based on Q.931) signaling

GSM standard 04.08[6] defined the message that is used for circuit-switched call control.Especially, the 9.3.23.1 in [6] has defined the content of the SETUP message that is used for the called foundation of travelling carriage.This message sends to travelling carriage to start the called foundation of travelling carriage by network.SETUP message has comprised the element for information about about BC (bearing capacity), HLC (high-rise ability) and LLC (low layer ability).As mentioned above, it is exactly the information element that is mapped to of call function classification information V.8.BC

The purpose of bearer capability information element is the bearer service that will use during explanation connects.[6] Figure 10 .5.88 in has illustrated the BC element that is used for GSM.This element comprises 16 eight hytes (8 bit cell).In order to support that H.324 some bit or encoded point need be stored among eight hytes 3,4,6,6a, 6c and the 6d, are summarized as follows.Transmission mode (eight hytes 3) bit 40---circuit-mode 1---group mode

Select circuit-mode dual-mode (eight hytes 4) bit 40---half-duplex 1---full duplex

Select full duplex synchronous/asynchronous (eight hytes 6) bit 10---synchronous 1---asynchronous

Select simultaneous user's speed (eight hyte 6a) bit 432 10 001 0.3kbps suggestion X.1 and V.1100 010 1.2kbps suggestion X.1 and V.1100 011 2.4kbps suggestion X.1 and V.1100 100 4.8kbps suggestion X.1 and V.1100 101 9.6kbps suggestion X.1 and V.1100 110 12.0kbps transparent (X.1 incompatible and V.110), 0111 1.2kbps/7.5bps advise V.23, (asymmetric) X.1 and V.110

Above shown in encoded point be used to indicate user rate.At present, among the GSM not such as the available subscribers speed of 28.8kbps.But, when specifying the BC information element, Q.931 provide operable, wider user data rate collection.(about the mapping of 28.8kbps how to take place with other GSM in unspecified data rate in title " about the potential BC of other user rate " general introduction down.) connect element (eight hyte 6c) bit 7 60 0 transparent 01 opaque (RLP) 10 can, preferably transparent 11 can, preferably opaque

Select not specify in transparent other modem type (eight hyte 6d) bit 7 60 0 these territories other modem type 01 V.32bis1 0 V.34

Select potential BC fixed network users speed (eight hyte 6d) the bit 5432 10 0000 fixed network users speed of other user rate V.34 unavailable/this be worth nonsensical 00001 9.6kbps suggestion X.1 and V.1100 0010 14.4kbps suggestion X.1 and V.1100 0011 19.2kbps suggestion X.1 and V.1100 0100 28.8kbps suggestion X.1 and V.1100 0101 38.4kbps suggestion X.1 and V.1100 0110 48.0kbps suggestion X.1 and V.110 (synchronously) 00111 56.0kbps advise that X.1 and V.110 the transparent 01000 64.0kbps bits of (synchronously)/bit are transparent

For the example data rate of 28.8kbps, add the element of black expression above can using.So select 28.8.Acceptable chnnel coding (eight hyte 6e), travelling carriage is to the direction of network: if unacceptable 1 TCH/F14.4 of bit 70 TCH/F14.4 can accept to realize 14.4, even unacceptable 1 TCH/F9.6 of its selected bit 60 Spare bits 50 TCH/F9.6 can accept also to realize usually that unacceptable 1 TCH/F4.8 of 9.6 bits, 40 TCH/F4.8 can accept not to be widely used, 4.8 still exist and to accept chnnel coding (eight hyte 6e), network is to the MS direction: bit 4 to 7 is standby, can be set to " 0 "

This means which kind of chnnel coding network can not determine to use.In the present circumstance, because of the network startup call setup is rolled over, so this needs.Need realize revising to current GSM to realize it.The maximum number of Traffic Channel (eight hyte 6e), MS to network side to bit 3210001 TCH 0012 TCH 0103 TCH 0114 TCH 1005 TCH 1016 TCH 1107 TCH 1118 TCH

Use 14.4 the channel of HSCSD can obtain 28.8kbps by making up two.Make up and also can obtain 28.8kbps for 3 9.6.

The maximum number of Traffic Channel (eight hyte 6e), network are to the MS direction: bit 1 to 3 is standby, and is made as " 0 ".

The same, this means which kind of chnnel coding network can not determine to use, and need make amendment to GSM.From the BC information that Q.931 derives

The BC information of using in the GSM in-band signalling can also can be modified for GSM by Q.931 deriving.Advise that BC information discussed above is used for UMTS, is used for the reference frame of present patent application.

In information element Q.931BC, there is an additional encoded point, its needs and should be included in the UMTS signaling.This encoded point is user profile ground floor agreement (eight hyte 5), is described as follows: V.110, I.460 and X.30 user profile ground floor agreement (eight hytes 5) bit 5432 10 0001 ccitt standard speed cooperate.

This means and have eight hyte 5a and as giving a definition

Optional eight hyte 5b, 5c and 5d0 0010 advise G.711 μ-Lv 00011 advise G.711 A-restrain 00100 advise G.721 32kbps ADPCM and suggestion I.4600 0101 suggestions H.221 and H.2420 0110 suggestions H.223 and H.2450 0111 non-ITU-T standardization speed cooperate.This means and have eight

Hyte 5a and optional eight hyte 5b, 5c and 5d.This

User's speed of appointment among eight hyte 5a of use indication of encoded point

Rate is defined by the user.In addition, eight hyte 5b, 5c and 5d,

If, be defined by cooperating consistent with the speed of user's appointment.V.120 01000 ITU-T standardization speed cooperate.This means existence

Eight hyte 5a that define below and 5b and eight optional positions

Group 5c and 5d.01001 ccitt standard speed cooperate X.31HDLC sign filling.

Other all values keeps

Select H.223 and H.245 to advise.LLC

[6] Figure 10 .5.104 explanation lower layer compatibility information element in.The purpose of lower layer compatibility information element provides the device that addressing entity (for example high layer function network node of long-distance user or interconnecting unit or calling subscriber's addressing) can be used for carrying out compliance check.The lower layer compatibility information element is started in calling by PLMN and transmits pellucidly between entity (for example calling subscriber) and the addressing entity.

Except the information element identifier, low layer compatible information element such as ETS 300 102-1 are encoded.

Because same coding can transmit in BC, so this information element is optional.HLC

The purpose of high-rise capability information element provides the long-distance user can be used for checking compatible device.

High layer compatibility information element mode shown in Figure 10 .5.102 in [6] and table 10.5.125 is encoded.

High-rise compatible information element is started in calling by PLMN and transmits pellucidly between entity (for example calling subscriber) and the addressing entity (for example long-distance user or calling start the high layer function network node of entity addressing).But, if the user clearly asks (at subscription time), for realizing that telecommunication service provides the network of some ability can explain that this information is to provide specific business.

Can be from suggestion Q.931 the HLC encoded point below finding: high-level characteristic sign (eight hytes 4) bit 765432 10 000001 phones 0000100 fax groups 2/3 (suggestion is F.182[68]) 0100001 faxes are organized 4 class I (suggestion is F.184[69]), 0100100 teletext services, fundamental sum mix operation pattern

(suggestion is F.230[70]) and facsimile service group 4, class II

And III (suggestion is F.184) 0101000 teletext services, fundamental sum disposal operation mould

Formula (suggestion is F.220[71]) 0110001 teletext services, basic manipulation mode (suggestion

F.220[72]) 0110010 grammers based on videotext (suggestion F.300[73]

T.102[74]) 0110011 international videotext interconnection by gateway or interconnecting unit

(F.300 and T.101[75 suggestion] and 0110101 telegram businesses (suggestion is F.60[76]) 0111000 message handling systems (MHS) (X.400-build by series

View [77]) 1000001 OSI use (annotating 2) (X.200--series suggestion

[78]) 1011110 be preserved for safeguarding that (annotating 4) 1011111 is preserved for management (annotating 4) 1100000 audio visual (suggestion F.721[79]) 1100001 to 1101111 and is preserved for audio frequency

Visual business [2] 1111111 keeps

Suggestion F.700 suggestion [2] provides the method that makes up multimedia service, and described multimedia service is in good time and reactive terminal user and service provider's demand.This method is drafted general purpose terminal user application demand and network individual member collection or other of foundation in ITU-T communication capacity is connected.The process of explanation will be used to draft the suggestion of a series of general services in this suggestion, and these suggestions are combined in required communication task and medium composition and are used for the general service structure of (for example being used for multimedia conference service, multimedia distribution service etc.).Under the still disabled situation of suggestion that is suitable for, this method can reach the business solution of response as the basis of the structured conversation between terminal use and the service provider.

F.700 the bit 1100001 to 1101111 of middle appointment can be used for can designing for UMTS and using such as H.324 code-point or brand-new code-point.

V.8bis the signaling [4] of shining upon

[4] the available standard information classification in having listed V.8bis of the table 6-2 in.It comprises such as the classification of data and multimedia terminal H.324, so that cater to these following telecommunication services.[4] table 6-3 and 6-5 in have illustrated the coding that is used for these telecommunication services.V.8bis capabilities exchange advantage is: as a rule, its permission terminal determines when very fast wishes the H.324 operation of pattern.This is because V.8bis ability is only indicated the most basic and the most frequently used pattern.If wish is not that terminal must be finished call setup and carry out H.425[7 by the H.324 operator scheme of signaling V.8bis] whether capabilities exchange support required pattern with the terminal of determining far-end.

In suggestion communication capacity (CC) territory V.8bis that is used for H.324, the CC territory is formatted as one or more subdomains.Each subdomain finishes with eight hytes, and wherein bit [n] is made as 1.Residue subdomain behind first subdomain if having, should occur with same order, and the bit of wherein indicating them to occur is sent out.Actual Bit Allocation in Discrete can be seen from [4].

In first subdomain, distribute following bit.Title implication video has only when two-way video is supported and just is set up, according to suggestion H.324 (6.6

Joint) audio frequency has only when two way audio is supported and just is set up, according to suggestion H.324 (6.7

Joint) encrypt to have only when password is supported and just be set up, according to suggestion H.324 (9.2 joint) data indication have the data subdomain.Have only one or more bits of working as in the data subdomain

Just be set up when being set up to distribute possible future and comprise profile (new subdomain).In the data subdomain, distribute following bit: T.120 the title implication has only T.120 meeting to be supported just to be set up, according to advising H.324 (6.8.2.1

Joint) T.84 has only when the transmission of image T.84 and just be set up when being supported, H.324 according to suggestion

T.434, (6.8.2.2 joint) has only when T.434 file transfer is supported and just is set up, according to suggestion H.324

V.42, (6.8.2.3 joint) has only when V.42 user data is supported and just is set up, according to suggestion H.324

V.14, (6.8.1.2/6.8.2.6 joint) has only when V.14 user data is supported and just is set up, according to suggestion H.324

(6.8.1.1/6.8.2.6 joint) PPP has only when supporting that through network layer protocol sign (NLPID) IETF is point-to-point

Just be set up during agreement, just established according to advising that H.324 T.140 (6.8.2.5 joint) have only when the T.140 text session protocol of multimedia application is supported

Put, according to advising H.324 (6.8.2.8 joint)

Except indication in V.8bis, also have such as other pattern of directionless pattern and can be supported through the terminal of capabilities exchange signaling H.245.

When calling out at first when beginning, for example being transformed into subsequently H.324 pattern, can also use V.8bis signaling by speech pattern.Because this reason, MSC/IFW must can intercept the possible in-band signalling that comes from the PSTN modulator-demodulator all the time.Professional exchange starts the carrying of UMTS end subsequently rolls over, here according to finishing the carrying of " old " to H.324 calling out required qos parameter.

Mapping between UMTS and the PSTN/ISDN

At this joint different information elements and their coding are described.These codings must be mapped in PSTN/UMTS or ISDN/UMTSDE interface.

PSTN necessary in the frame of the reference of present patent application encodes.V.8

Call function classification (eight hytes one " callf0 ") 100 PSTN multimedia terminals (bit 567)

Modulating mode kind (eight hyte-" modn0 ") 1 V.34 duplexing availability (bit 6) V.25ter

The modulation control command

Modulation report control (+MR)+and MCR:V34+MCR:＜carrier wave 〉+MRR:28800+MRR:＜speed〉V.8bis

Standard information territory-{ Spar (1) } coding

Standard information territory-data { Npar (2) } coding (eight hytes 2) 1 advised V.34 dual-mode (bit 5)

Standard information territory-{ Spar (1) } coding

Standard information territory-H.324 multimedia terminal { Npar (2) } coding 1 video (bit 1)

Standard information territory-{ Spar (1) } coding

Standard information territory-H.324 multimedia terminal { Npar (2) } coding 1 audio frequency (bit 2)

Necessary ISDN coding in the frame of the reference of present patent application (at needs V.140 under the situation of signaling):

V.140 inband signaling is made up of the PDU of HDLC framing, and it is X.680 to use the ASN.1 syntactic definition and according to suggestion compressed encoding rule encoding X.691 according to suggestion.

Using V.140, the purpose of signaling is the network that exists end-to-end transmission out-of-band signalling message to lose efficacy.The V.140 signaling of using among the ISDN more or less do with PSTN in the identical thing of signaling V.8/V.8bis.

The capabilitySet territory of roleAndCapability PDU comprises the sequence of one or more ability structures, and each expression is operated in the ability of the terminal under specific multimedia or other communication protocol.Transmitter should comprise the complete list of the current pattern that can operate.The tabulation of possible pattern defines in appendix A V.140, and can expand in future.Ability should be by prioritizing, from optimum to least excellent.In our example, h324AnnexD should be first (or only) of listed ability in the capabilitySet territory.

Receiving terminal can be replied the transmission terminal of institute's lectotype by using modeSelect PDU.

The grammer [V.140 appendix A] of the PDU that uses the ASN.1 symbol is described below.The bigger font representation of " code-point " that we select.

  HDISPATCH DEFINITIONS AUTOMATIC TAGS∷＝  BEGIN  -Export all symbols  -  ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝  -Top level PDUs  -  ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝  HDispatchPDU               ∷＝CHOICE  {　　  nonStandard            NonStandardMessage，　　  roleAndCapability      RoleAndCapabilityMessage，　　  modeSelect             Mode，　　  youChoose              NULL，　　  modeSelectAcknowledge  NULL，　　  terminate              TerminateMessage，　　  …   }  RoleAndCapabilityMessage   ∷＝SEQUENCE  {　　  role                   CHOICE　　  {　　       originate         NULL，　　       unknown           NULL，　　       answer            NULL，　　       … 　　  }，<!-- SIPO <DP n="50"> --><dp n="d50"/>　　arbitratlonField               INTEGER(0.4294967295)，-32 bit　　                               random#　　capabilitySet                  SEQUENCE SIZE (1..65535) OF　　                               Capability，　　… }Capability                         ∷＝CHOICE{　　nonStandard                    NonStandardParameter，　　isdn                           CHOICE　　{　　isdnCapability                 IsdnCapability，　　multilinkAdditionalConnection  NULL，-Express this cap alone to　　                                     force association of this　　                                     channel with　　                                           -an existing call　　is13871                        SEQUENCE    -″BONDING”protocol　　     {　　                               withlsdnCapability IsdnCapability，　　                               …　　      }，　　      h244                  SEQUENCE              -      channel aggregation protocol　　      {　　                            withlsdnCapability    IsdnCapability，　　                            … 　　      }，　　      …  　　}，　　…  }  IsdnCapability                ∷＝CHOICE  {　　  g711aLaw                  SEQUENCE{…}，　　  g711uLaw                  SEQUENCE{…}，　　  h320                      SEQUENCE{…}，　　  h324AnnexD                SEQUENCE[…}，　　  h324Multilink             SEQUENCE{…}，　　  group4Fax                 SEQUENCE{…}，　　  t120                      SEQUENCE{…}，　　  t140                      SEQUENCE{…}，-text chatting protocol　　  v110                      SEQUENCE{…}，　　  v120                      SEQUENCE{…}，　　  rfc1661                   SEQUENCE　　  {    　　       withH323          BOOLEAN，<!-- SIPO <DP n="51"> --><dp n="d51"/>　　       …  　　  }，　　  …  }   {  　　  nonStandard                      NonStandardParameter，　　  plainlsdnMode                    IsdnMode，　　  h244                             IsdnMode，　　  is13871                          IsdnMode，     --    BONDING protocol　　  multilinkAdditionalConnection    SEQUENCE　　  {　　        callAssociationNumber   INTEGER(0..4294967295}，　　        …　　}，　　… } IsdnMode                     ∷＝CHOICE {  　　 nonStandard                  NonStandardParameter；　　 g711aLaw                     SEQUENCE{…}，　　 g711uLaw                     SEQUENCE{…}，　　 h320                         SEQUENCE{…}，　　 h324AnnexD                   SEQUENCE{…}，　　 h324Multilink                SEQUENCE{…}，　　 group4Fax                    SEQUENCE{…}，　　 t120                         SEQUENCE{…}，　　 rfc1661                      SEQUENCE{…}，　　 … } TerminateMessage                 ∷＝SEQUENCE {　　  cause                       CHOICE　　  {　　      nonStandard             NonStandardParameter，　　      timerExpiration         NULL，　　      roleCoilision           NULL，　　      noSuitableModes         NULL，　　      invaiidModeSelected     NULL，　　      protocolViolation       NULL，　　      modeNotAvailable        NULL，　　      …　　  }，<!-- SIPO <DP n="52"> --><dp n="d52"/>　　 …}-＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝-Non standard Message definitions-＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝NonStandardMessage          ∷＝SEQUENCE{　　nonStandardData         NonStandardParameter，　　… }NonStandardParameter        ∷＝SEQUENCE{　　nonStandardldentifier   NonStandardldentifier，　　data                    OCTET STRING}NonStandardldentifier       ∷＝CHOICE{　　object                  OBJECT IDENTIFIER，　　h221NonStandard         SEQUENCE　　{　　    t35CountryCode      INTEGER(0，.255)，-country，perT.35　　    t35Extension        INTEGER(0..255)，-assigned ationally　　    manufacturerCode    INTEGER    (0..65535)-      assignednationally　　 }}

UMTS (GSM) necessary in the frame of the reference of present patent application encodes: bearing capacity

The bearer capability information element

Transmission mode (eight hytes 3) 0 circuit-mode (bit 4)

The bearer capability information element

Dual-mode (eight hytes 4) 1 full duplex (bit 4)

The bearer capability information element

Synchronous/asynchronous (eight hytes 6) 0 synchronous (bit 1)

The bearer capability information element

Fixed network users speed (eight hyte 6d) 00100 28.8kbps (bit 54321)

The bearer capability information element

Can accept chnnel coding (eight hyte 6e) 1 TCH/F14.4 and can accept (bit 7)

The bearer capability information element

Can accept chnnel coding (eight hyte 6e) 1 TCH/F9.6 and can accept (bit 5)

The bearer capability information element

Can accept chnnel coding (eight hyte 6e) 1 TCH/F4.8 and can accept (bit 4)

The bearer capability information element

Largest traffic channel number (eight hyte 6e) 001 2TCH (bit 321)

The bearer capability information element

Connect element (eight hyte 6c) 00 transparent (bit 76)

The bearer capability information element

Other modem type (eight hyte 6d) 10 is (bit 76) V.34

The bearer capability information element

H.223 and H.245 user profile ground floor agreement (eight hytes 5) 00110 suggestion is (bit 54321)

Nearest encoded point does not appear in the current GSMBC information element.Q.931 it take from and should join in following UMTS BC information element.High Layer Compatibility

The high layer compatibility information element

High-level characteristic sign (eight hytes 4) 1100001 PSTN multimedia terminals (bit 7654321)

Present invention resides in this clear disclosed any novel feature or characteristics combination or it is summarized, no matter they whether relate to the invention of claim or alleviate in the problem that is proposed any one or all.

Consider top explanation, for a person skilled in the art clearly, can make various modifications within the scope of the invention.For example, simplifying numbering plan is not limited to have only one or two number to be used for the type of call difference.Will know that full text is exemplary to quoting H.324 purely, the present invention also can be used for other data type.

Claims (42)

1. one kind is used for setting up the switch of calling out between the terminal of the terminal of originating network and terminating network, and described switch comprises:

The importation is used for receiving from described originating network the call identification information of first form;

The reformatting device is used for the call identification information that receives is reformatted as second form;

Output device is used for exporting by described terminating network the described call identification information of described second form; With

Jockey is used to finish connection between the described terminal, that be suitable for the described calling that is identified.

2. the switch of claim 1, it is characterized in that: described call identification information comprises call type.

3. the switch of claim 2, it is characterized in that: described call type comprises telecommunication service information.

4. the switch of aforementioned any one claim, it is characterized in that: described call identification information comprises bearer service information.

5. the switch of claim 4 is characterized in that: the described reformatting device that is used for the bearer service information of described reception is carried out reformatting is arranged to make by negotiations that the carrying of described terminating network and the carrying of described originating network are complementary.

6. the switch of aforementioned any one claim is characterized in that: described first form is a form in the band.

7. the switch of aforementioned any one claim is characterized in that: described second form is the outer form of band.

8. the switch of aforementioned any one claim, it is characterized in that: described terminating network is digital.

9. the switch of aforementioned any one claim, it is characterized in that: described originating network is simulated.

10. the switch of aforementioned any one claim, it is characterized in that: one in the described network is cordless communication network.

11. the switch of claim 10 is characterized in that: described cordless communication network is Universal Mobile Telecommunications System (UMTS) network.

12. the switch of claim 10 is characterized in that: described cordless communication network is the GSM network.

13. the switch of claim 11 or 12 is characterized in that: described switch is a mobile switching centre.

14. any one switch of claim 10 to 13 is characterized in that comprising coded conversion device.

15. any one switch of claim 10 to 14, it is characterized in that: described cordless communication network is described terminating network.

16. any one switch of claim 1 to 7, it is characterized in that: one in the described network is fixed-line network.

17. the switch of claim 16 is characterized in that: described fixed-line network is the PSTN network.

18. the switch of claim 16 is characterized in that: described fixed-line network is an isdn network.

19. any one switch of claim 16 to 18, it is characterized in that: described fixed-line network is described originating network.

20. the switch of aforementioned any one claim is characterized in that also comprising:

The device that connects described importation is used for determining main call type according to Subscriber Number, is used for the first main call identification information is transmitted to described output, and is used for other main call identification information is transmitted to described reformatting device.

21. one kind is used for setting up the method for calling out between the terminal of the terminal of originating network and terminating network, said method comprising the steps of:

Receive the call identification information of first form from described originating network;

The call identification information that receives is reformatted as second form;

Export the described call identification information of described second form by described terminating network; And

The connection that is suitable for the described calling that is identified shown in finishing between the terminal.

22. the method for claim 21 is characterized in that: described call identification information comprises call type.

23. the method for claim 22 is characterized in that: described call type comprises telecommunication service information.

24. any one method of claim 21 to 23, it is characterized in that: described call identification information comprises bearer service information.

25. the method for claim 24 is characterized in that: the call identification information that receives is carried out reformatting comprise that the carrying that makes described terminating network by negotiations and the carrying of described originating network are complementary.

26. the method for aforementioned any one claim is characterized in that: described first form is a form in the band.

27. the method for aforementioned any one claim is characterized in that: described second form is the outer form of band.

28. the method for aforementioned any one claim is characterized in that: described terminating network is digital.

29. the method for aforementioned any one claim is characterized in that: described originating network is simulated.

30. any one method of claim 21 to 29, it is characterized in that: one in the described network is cordless communication network.

31. the method for claim 30 is characterized in that: described cordless communication network is Universal Mobile Telecommunications System (UMTS) network.

32. the method for claim 30 is characterized in that: described cordless communication network is the GSM network.

33. any one method of claim 21 to 27, it is characterized in that: one in the described network is fixed-line network.

34. the method for claim 33 is characterized in that: described fixed-line network is the PSTN network.

35. the method for claim 33 is characterized in that: described fixed-line network is an isdn network.

36. any one method of claim 33 to 35, it is characterized in that: described fixed-line network is described originating network.

37. between the terminal of the terminal of originating network and terminating network, set up the method for calling out, said method comprising the steps of for one kind:

Set up the calling of predefined type;

Send the call identification information of first form to described terminating terminal from described origination terminal;

The call identification information that receives is reformatted as second form;

Send the described call identification information of described second form to described terminating terminal; And

Set up the connection that is suitable for the described calling that is identified between the described terminal.

38. any one method of claim 21 to 37 is characterized in that further comprising the steps of:

Determine main call identification information according to Subscriber Number;

If described main call identification then provides described predetermined connection corresponding to the predetermined call identification that connects; And

If described main call information difference is then carried out described reformatting, transmission and establishment step.

39. one kind is used for setting up the switching system of calling out between the terminal of the terminal of originating network and terminating network, described switching system comprises:

Be used for receiving the device of the call identification information of first form from described originating network;

Be used for the call identification information that receives is reformatted as the device of second form;

Be used for sending the device of the described call identification information of described second form by described terminating network; With

Jockey is used to finish the connection that is suitable for the described calling that is identified between the described terminal.

40. between the terminal of the terminal of originating network and terminating network, set up the switch of calling out for one kind, resemble basically with reference to any one or they of accompanying drawing 3 to 23 any be combined in above-described and/or as in any combination of any one or they of accompanying drawing 3 to 23, exemplifying explanation.

41. one kind is used for setting up the system of calling out between the terminal of the terminal of originating network and terminating network, resemble basically with reference to any one or they of accompanying drawing 3 to 23 any be combined in above-described and/or as in any combination of any one or they of accompanying drawing 3 to 23, exemplifying explanation.

42. between the terminal of the terminal of originating network and terminating network, set up the method for calling out for one kind, resemble basically with reference to any one or they of accompanying drawing 3 to 23 any be combined in above-described and/or as in any combination of any one or they of accompanying drawing 3 to 23, exemplifying explanation.

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