CN100490477C

CN100490477C - System and method for implementing color ring back tone (CRBT) service in CDMA communication system

Info

Publication number: CN100490477C
Application number: CNB200410034184XA
Authority: CN
Inventors: 杨国道; 李祖建; 童国凡; 张宜; 陈友军; 刘家庆
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-04-23
Filing date: 2004-04-23
Publication date: 2009-05-20
Anticipated expiration: 2024-04-23
Also published as: WO2005104414A1; CN1691713A

Abstract

The invention discloses system and its method to realize affair of multicolor back ringing in CDMA system. Connects all the HLR of mobile communication net supplied by the invention and SPS device added newly by signaling network, user belonged to HLR register their multicolor back ringing affair to SPS connected to HLR. In the method of this invention, when calling host call the user with multicolor back ringing registered on SPS, the GMSC/MSC of calling communicates interactively by HLR and SPS, the SPS routes the call of MSC/GMSC of calling used virtual multicolor ringing center address to MSC of called; the multicolor ring center plays multicolor back ringing to calling, when the called response, stops multicolor back ringing and switch on telephone channel.

Description

Realize the system and method for Coloring Ring Back Tone in the code division multiple address communication system

Technical field

The present invention relates to the voice communication technical field, relate in particular to the system and method for realizing Coloring Ring Back Tone in a kind of code division multiple address communication system.

Background technology

Current, along with the continuous development of telecommunication technology, people also improve day by day for the requirement of telecommunications service, and the telecommunications service of many personalizations are emerged in large numbers thus, and Ring Back Tone service is exactly one of these telecommunications personalized services.Ring Back Tone service also is Coloring Ring Back Tone, registered should business the user as the called subscriber time, can replace the common ring-back tone that sent to the calling subscriber originally with one section voice of prior customization, thereby satisfy the needs of user individual.Adopt this business, people can no longer only hear and be similar to the ring-back tone of the dullness of " pouting---toot---" when calling, but can the uppick called subscriber or the Comfort Noise Generation (CNG) as a section music, advertisement or message that operator customized.

Ring Back Tone service generally realizes with the mode of intelligent network, registers this professional user and can customize different " CRBT " by online or mode such as call.Registering this professional user leaves business datum in the IN DataBase in, and adopt one independently voice platform as the equipment of coloring ring back tone playing, the equipment of this coloring ring back tone playing is collectively referred to as the CRBT center, can use high-grade intelligent peripheral hardware (AIP) or any voice platform that other supports Ring Back Tone service as the CRBT center.

Introduce the method that realizes Ring Back Tone service in the prior art below.

1, utilize intelligent network to realize Ring Back Tone service:

Referring to networking diagram shown in Figure 1, wherein, dotted line among this figure is represented the Signaling System Number 7 link, chain-dotted line is represented data link, solid line is represented speech channel, when the calling subscriber calls out the called subscriber of the Ring Back Tone service of having contracted, this calling subscriber triggers Ring Back Tone service by Service Switching Point, SSP is to the Service Control Point reporting message, after SCP receives this message, according to the called number in this message, obtain this called subscriber's predefined CAMEL-Subscription-Information from attaching position register (HLR), SCP judges that according to this CAMEL-Subscription-Information obtaining the called subscriber is color ring user, thereby instruction SSP routes the call to AIP, when the called subscriber does not receive calls, AIP plays the Comfort Noise Generation (CNG) that the called subscriber customizes in advance to the calling subscriber, when the called subscriber received calls, then AIP stopped to play Comfort Noise Generation (CNG) to the calling subscriber, and calling subscriber and called subscriber utilize the speech channel via AIP to realize conversation.

Though this method can realize Coloring Ring Back Tone,, this kind method has following shortcoming:

(1) because the SSP in the intelligent network can only trigger an IN process in call, therefore, wait the user of other IN service for contracted Prepaid Service for example or VPMN (VPMN), adopt this kind mode to realize Coloring Ring Back Tone, can the realization of other IN service that this user contracted be impacted;

(2) for the user of other IN service of having contracted, need upgrade to support Ring Back Tone service to SCP with said method realization Coloring Ring Back Tone, the upgrading of this kind SCP is unfavorable for the rapid popularization of Ring Back Tone service; No matter also can mark off different SCP according to the type of IN service and realize separately IN service respectively, still, be to consider from networking standpoint, considers from the angle of professional specific implementation that still this kind mode implements all very difficulty;

(3) in the method for above-mentioned realization Ring Back Tone service, SCP need instruct SSP to route the call to AIP, in this process, mobile services switching centre (MSC) for the calling subscriber place, Call Forwarding has taken place, this MSC can produce corresponding preceding transfer list, in order the user not to be carried out the charging that should not carry out, accounting system need be changed to choose transfer list before this kind, and the change of accounting system has increased the complexity that realizes Ring Back Tone service, is unfavorable for the rapid popularization of Ring Back Tone service.

2, adopt the mode of transforming switch and HLR to realize Ring Back Tone service:

Referring to networking diagram shown in Figure 2, wherein, dotted line among this figure is represented the Signaling System Number 7 link, solid line is represented speech channel, this method realizes that Ring Back Tone service at first needs HLR is transformed, after transforming, make when user position update that HLR can be inserted into VLR Visitor Location Register (VLR) with corresponding " CRBT " mark; Simultaneously, also needing the MSC/VLR of all terminal stations is transformed, whether be " CRBT " user so that the MSC/VLR of improved terminal station can be inserted into data markers position among the VLR according to HLR if judging this called subscriber; After having carried out as above transformation, when the calling subscriber calls out the called subscriber of the Ring Back Tone service of having contracted, the Gateway Mobile Switching Center of Calling Side (GMSC)/MSC routes the call to the MSC at called subscriber place by initial address message, this called subscriber's MSC is according to " CRBT " mark that HLR inserted, judge that obtain this called subscriber is the user of Ring Back Tone service of having contracted, this MSC structure initial address message (IAM) routes calls to corresponding AIP, this AIP plays the Comfort Noise Generation (CNG) of customization in advance to the calling subscriber, simultaneously, the MSC at called subscriber place masks the common ring-back tone that self sends to the calling subscriber; Behind called subscriber answer, MSC remove with AIP between circuit is connected, stop the broadcast of Comfort Noise Generation (CNG), realize between the calling and called conversing.

Realize Ring Back Tone service with this kind method, have following shortcoming:

(1) need the MSC/VLR of HLR and end office (EO) be transformed, realizing Ring Back Tone service, thereby make the realization relative complex of Ring Back Tone service, be unfavorable for the rapid popularization of Ring Back Tone service;

(2) if for the whole network provides Coloring Ring Back Tone, then need the HLR and the MSC/VLR of the whole network are transformed, this kind transformation needs HLR and MSC/VLR to closely cooperate, engineering coordinate and service maintenance quite difficult.

Summary of the invention

In view of this, main purpose of the present invention is to provide the system and method for realizing Coloring Ring Back Tone in a kind of code division multiple access (CDMA) system, to be implemented in to realizing Coloring Ring Back Tone under the less situation of existing network change impact, thereby reach investing little and legacy network being changed under the little situation of impact, promote the purpose of Coloring Ring Back Tone rapidly.

For achieving the above object, the invention provides the system that realizes Coloring Ring Back Tone in a kind of code division multiple address communication system, each attaching position register HLR of mobile communication network side is connected by signaling network with the signal processing system SPS equipment that increases newly separately respectively in this system, this SPS equipment is connected by signaling network with the CRBT center with mobile services switching centre in the code division multiple address communication system, ownership is on the SPS that the user is registered in Coloring Ring Back Tone with this HLR links to each other of HLR, when the called subscriber of Coloring Ring Back Tone has been registered in calling subscriber's calling on SPS, the Gateway Mobile Switching Center GMSC/ mobile services switching centre MSC of Calling Side carries out interacting message via the HLR of SPS and called subscriber's ownership, this SPS utilizes virtual CRBT centre address, the calling that MSC/GMSC initiated of Calling Side is routed to the MSC at called subscriber place via the CRBT center, then, the CRBT center masks the common ring-back tone that the end office (EO) at called subscriber place sends, and plays the Comfort Noise Generation (CNG) of customization to the calling subscriber.

Wherein, described HLR is connected with the SPS equipment that increases newly and comprises:

Described SPS equipment is connected to described HLR via the Signalling Transfer Point STP corresponding with described HLR;

Described SPS equipment is connected with the CRBT center with mobile services switching centre in the code division multiple address communication system and comprises:

Described SPS equipment directly is connected with described CRBT center, and described SPS equipment is connected with described mobile services switching centre via the STP of described HLR correspondence.

Described HLR connects via the described SPS equipment STP corresponding with this HLR;

Wherein, described SPS equipment directly is connected with described HLR; Described SPS equipment directly with code division multiple address communication system in mobile services switching centre be connected with the CRBT center.

Described SPS equipment as with STP that described HLR is connected in a functional entity, be connected with described HLR;

Described SPS equipment as with STP that described HLR is connected in a functional entity, be connected with the CRBT center with described mobile services switching centre.

Wherein, described CRBT center is high-grade intelligent peripheral hardware AIP.

For achieving the above object, the present invention adopts the method that realizes Coloring Ring Back Tone in a kind of code division multiple address communication system, and this method may further comprise the steps:

Steps A: the calling subscriber calls out the called subscriber who has registered Coloring Ring Back Tone, the MSC/GMSC of Calling Side sends position requests LOCREQ message via the SPS that the HLR with called subscriber's ownership is connected to this HLR, after HLR obtains called subscriber's routing iinformation, return LOCREQ response locreq message to SPS, SPS is virtual CRBT centre address with called subscriber's routing information change entrained in this locreq message, sends to the MSC/GMSC of Calling Side then;

Step B: the MSC/GMSC of Calling Side is according to the virtual CRBT centre address in the locreq message of being sent in the steps A, make a call to described CRBT center via described SPS, when the calling process SPS that the MSC/GMSC of Calling Side sends, this SPS changes to called subscriber's true routing iinformation in this calling;

Step C: the CRBT center is according to the called subscriber's routing iinformation that changes in step B in the calling, route the call to the MSC at called subscriber place, then, the CRBT center masks the common ring-back tone that the end office (EO) at called subscriber place sends, and plays the Comfort Noise Generation (CNG) of customization to the calling subscriber.

Wherein, steps A comprises:

Steps A 1: the GMSC/MSC of Calling Side sends LOCREQ message to described SPS;

Steps A 2: after described SPS receives LOCREQ message, judge according to the called user information in this message whether this called subscriber has registered Coloring Ring Back Tone on described SPS, if, then the calling address information change with the SCCP SCCP in this message is the global title GT of described SPS, then, LOCREQ message is sent to described HLR;

Steps A 3:HLR obtains called subscriber's routing iinformation, according to amended SCCP calling address in the steps A 2, locreq message is sent to described SPS, carries called subscriber's mobile station roaming number TLDN in this locreq message;

Steps A 4: described SPS changes to virtual CRBT centre address with called subscriber's entrained in the locreq message TLDN, and then, the locreq message after will changing sends to the MSC/GMSC of Calling Side.

Wherein, in steps A 2, SPS judges that the called subscriber has registered after the Coloring Ring Back Tone, further comprises:

MSC in the described LOCREQ message of SPS sign be set to one predefined in order to being different from the value of other MSC, and then this LOCREQ message is sent to described HLR.

Wherein, in steps A 4, SPS further the sign of the MSC in the locreq message be set to one predefined in order to being different from the value of other MSC, and then this locreq message is sent to the MSC/GMSC of Calling Side.

Wherein, step B comprises:

Step B1: the MSC/GMSC of Calling Side is according to the virtual CRBT centre address that is sent in the steps A, construct an initial address message IAM who mails to described CRBT center, in this IAM, carry described virtual CRBT centre address, according to the signalling route data configuration, this IAM at first sends to described SPS;

After step B2:SPS receives the IAM that step B1 sends, CRBT centre address virtual in this message is changed to the real TLDN of described called subscriber and the international identifier MSISDN of called subscriber's travelling carriage is inserted among this IAM;

The IAM that step B3:SPS will carry out after the step B2 change sends to the CRBT center.

Wherein, CRBT center described in the step C routes the call to the MSC at called subscriber place and is:

The CRBT center sends IAM according to called subscriber's routing iinformation to the MSC at called subscriber place.

Wherein, the Comfort Noise Generation (CNG) that the mind-set calling subscriber plays customization in the described CRBT of step C is:

The MSC at called subscriber place sends Address Complete Message ACM to the CRBT center, and the CRBT center sends ACM to the MSC/GMSC of Calling Side then, and then, the mind-set calling subscriber plays Comfort Noise Generation (CNG) in the CRBT.

Wherein, described CRBT center broadcast Comfort Noise Generation (CNG) comprises:

The CRBT center selects the Comfort Noise Generation (CNG) corresponding with this condition to play according to the condition that comprises called subscriber's MSISDN and/or rear subscriber number.

Wherein, described CRBT center is AIP.

Wherein, after the described step C of step, this method further comprises:

Called subscriber's off-hook is replied, and the CRBT center stops to play Comfort Noise Generation (CNG) to the calling subscriber, and connects the speech channel between calling subscriber and the called subscriber, and calling subscriber and called subscriber utilize this speech channel to converse.

Wherein, described CRBT center stops to play Comfort Noise Generation (CNG) to the calling subscriber, and the speech channel of connecting between calling subscriber and the called subscriber comprises:

Behind the called subscriber answer, the MSC at called subscriber place sends answer charging ANC message to the CRBT center, after this message is received at the CRBT center, stop to play Comfort Noise Generation (CNG), and, the MSC/GMSC of mind-set Calling Side sends ANC message in the CRBT, to connect the speech channel between calling subscriber and the called subscriber.

As seen, the present invention has following beneficial effect:

1, owing to the present invention is directed to HLR and increase signal processing system (SPS) equipment newly and can realize Coloring Ring Back Tone, and SPS equipment is easy to realize, therefore, can release Coloring Ring Back Tone rapidly under the less situation of investment;

2, adopt system provided by the present invention to realize Coloring Ring Back Tone, do not have specific (special) requirements, the equipment in the mobile communications network to need not to upgrade in order to realize Coloring Ring Back Tone to the switch in the mobile communications network, HLR, SCP etc.;

3, realize Coloring Ring Back Tone with method of the present invention, can not increase signaling process, thus feasible very little to the impact of existing network, and, also very little to the influence of call delay;

4, when SPS and/or AIP break down, only can the user of the Coloring Ring Back Tone of having contracted be impacted, and can the normal call of other domestic consumers not impacted;

5, method of the present invention does not adopt the SCP in the intelligent network to realize Coloring Ring Back Tone, therefore, on the one hand, can not generate preceding transfer list owing to SCP issues CONNECT, thereby need not to change accounting system; On the other hand, because SCP does not participate in the method that the present invention realizes Coloring Ring Back Tone, therefore, SCP still can realize other IN service that the user contracts, and the method that is to say, the present invention realizes Coloring Ring Back Tone can not impact other IN service of user;

6, because Coloring Ring Back Tone is registered on the SPS, therefore make simple to the management of this business;

7, adopt this method to realize Coloring Ring Back Tone, only need carry out one query HLR, little to the impact of HLR;

8, method provided by the present invention all can realize Coloring Ring Back Tone for the cdma system that adopts intelligent network;

9, method provided by the present invention, as called and when roaming, perhaps the calling subscriber all can realize Coloring Ring Back Tone in other provinces or during outer net the user of signatory Coloring Ring Back Tone.

Except the above beneficial effect, the present invention also has good autgmentability, and range of application can be more extensive.

Description of drawings

Fig. 1 realizes the networking diagram of Coloring Ring Back Tone for utilizing intelligent network in the prior art.

Fig. 2 is for realizing the networking diagram of Ring Back Tone service in the mode of transforming switch and HLR in the prior art.

Fig. 3 is the networking diagram of system provided by the present invention.

Fig. 4 is the schematic diagram of the connected mode of SPS among the present invention and HLR.

Fig. 5 is the schematic diagram of the connected mode of SPS among the present invention and HLR.

Fig. 6 is the schematic diagram of the connected mode of SPS among the present invention and HLR.

Fig. 7 is the schematic diagram of the connected mode of SPS among the present invention and HLR.

Fig. 8 realizes the flow chart of Coloring Ring Back Tone for the present invention.

Embodiment

The present invention is a kind of system and method for realizing Coloring Ring Back Tone in cdma system, system provided by the present invention, each HLR for mobile communication network side increases SPS equipment respectively newly, make some critical message between the GMSC/MSC of HLR and Calling Side carry out through this SPS alternately, record the Coloring Ring Back Tone that the home subscriber of the HLR that is connected with this SPS is registered on this SPS, when the calling subscriber calls out the called subscriber who has registered Coloring Ring Back Tone, this SPS carries out special processing to signaling message, routes to the called subscriber thereby make the MSC/GMSC of Calling Side will call out via the CRBT center.In method provided by the present invention, configuration by the signaling network route data, some critical message between the HLR of the MSC/GMSC of Calling Side and called subscriber's ownership are carried out through SPS alternately, this SPS changes the called subscriber's that HLR returned routing iinformation, be sent to the MSC/GMSC of Calling Side then, the MSC/GMSC of Calling Side is according to the routing iinformation after changing, route the call to the CRBT center, by the once more change of SPS to route data in the message related to calls, calling can finally be routed to the called subscriber, before called subscriber answer, the mind-set calling subscriber plays the Comfort Noise Generation (CNG) of customization in advance in the CRBT, in case called subscriber answer, then the CRBT center stops to play Comfort Noise Generation (CNG), and the speech channel between connection calling subscriber and the called subscriber, calling subscriber and called subscriber utilize this speech channel to realize conversation.

Describe the present invention below in conjunction with accompanying drawing.

Referring to networking diagram shown in Figure 3, wherein, dotted line among this figure is represented the Signaling System Number 7 link, chain-dotted line is represented data link, solid line is represented speech channel, and (INTERNET) obtains and preserve the Comfort Noise Generation (CNG) that service provider (SP) is provided to AIP equipment utilization data link from the Internet via door (Portal); In the present invention, each HLR for mobile communication network side all increases a signal processing system (SPS) equipment newly, the HLR that this SPS equipment is corresponding with it connects by signaling network, this SPS equipment is connected by signaling network with mobile services switching centre in the cdma system, crucial Signalling exchange between the HLR that the GMSC/MSC of Calling Side and called subscriber contract carries out through SPS, this SPS equipment also has signaling to be connected with AIP equipment, be used to route the call to AIP, and final route is to the MSC at called subscriber place; This SPS equipment can be realized:

1, sends to the actual LOCREQ message that will go to called signatory HLR of SPS for Calling Side GMSC/MSC, if the called subscriber has registered Coloring Ring Back Tone, global title (GT) address that SPS will change the SCCP (SCCP) of this message is the GT address of SPS self, and the LOCREQ response message locreq that makes HLR return can also pass through SPS;

2, the called subscriber roaming number (TLDN) of HLR in the locreq message that Calling Side GMSC/MSC is returned changed to virtual AIP address, GMSC/MSC to Calling Side transmits the locreq message that comprises this virtual address, thereby make the GMSC/MSC of Calling Side to route the call to AIP according to the message of being received;

3, the IAM message that sends to AIP via SPS for Calling Side GMSC/MSC, this SPS equipment can be the real addressing information of called subscriber with the virtual address change in this message, thereby make to call out and finally be connected to the called subscriber via AIP, and SPS inserts called subscriber's MSISDN in IAM message, be used for the selection that AIP carries out Comfort Noise Generation (CNG);

4, carry out the registration of Ring Back Tone service on SPS equipment, the information of the user being registered Ring Back Tone service is kept on the SPS, and this registration can be adopted the mode of business hall registration, also can be undertaken by alternate manner;

Wherein, in the prior art, each HLR has Signaling Transfer Point equipment separately respectively, HLR is connected with GMSC/MSC by STP equipment, in the present invention, according to the relative position relation of SPS and STP, the connected mode of SPS equipment and HLR equipment comprises following several:

(1) SPS equipment is connected to this HLR via the STP that is connected with HLR:

Referring to Fig. 4, in this kind mode, network using collimation connection mode, HLR is connected to GMSC/MSC by STP equipment, on STP equipment, further connect SPS equipment provided by the present invention, SPS equipment is connected to this HLR and (G) MSC via the STP corresponding with HLR, and this SPS equipment directly carries out signaling with AIP and is connected; In this kind mode, carrying out corresponding signalling route data configuration on the STP equipment and/or on the GMSC/MSC, thereby making some signaling messages that send to HLR at first pass through SPS;

(2) HLR connects via the SPS equipment STP corresponding with this HLR:

Referring to Fig. 5, in this kind mode, HLR is connected with SPS equipment provided by the present invention, and this SPS equipment is connected to the STP equipment of this HLR correspondence, thereby makes HLR be connected on the STP equipment of this HLR equipment correspondence by SPS equipment; Adopt this kind mode, make and all at first pass through SPS to the message that HLR sent, and the return messages of HLR are also at first passed through SPS through STP equipment; Referring to Fig. 5, this SPS equipment directly carries out signaling with AIP and is connected, and SPS equipment carries out signaling via the STP equipment corresponding with HLR with (G) MSC and is connected;

(3) SPS equipment directly is connected with HLR equipment:

Referring to Fig. 6, in this kind mode, SPS equipment directly is connected with HLR equipment, and this SPS equipment directly is connected with (G) MSC with AIP, in this way, makes HLR pass through this SPS equipment and is connected with (G) MSC with AIP;

(4) SPS equipment as with STP that HLR is connected in a functional entity, be connected with HLR:

Referring to Fig. 7, in this kind mode, the function of SPS equipment directly inserted with the corresponding STP equipment of HLR in, thereby use as a functional entity in the STP equipment, SPS equipment carries out signaling respectively with HLR, (G) MSC and AIP and is connected as a functional entity among the STP corresponding with described HLR; Accordingly, need upgrade, be placed in the STP equipment with function with SPS equipment to STP equipment.

Utilize above-mentioned system shown in Figure 3, referring to Fig. 8, the present invention realizes that Coloring Ring Back Tone may further comprise the steps:

Step 801: the calling subscriber calls out the called subscriber who has registered Ring Back Tone service on SPS, call out origin MSC/GMSC (O_MSC/GMSC) and initiate position requests (LOCREQ) flow process, this LOCREQ flow process specifically comprises the described content of step 801～step 804, obtains called subscriber's routing iinformation with request by this LOCREQ flow process; In this step 801, O_MSC/GMSC sends LOCREQ message to the HLR that the called subscriber contracts, and according to the configuration of Signaling System Number 7 route data, this LOCREQ message at first sends to the SPS equipment that is connected with this HLR; Wherein, entrained information comprises called subscriber's the international identifier (MSISDN) of travelling carriage in the LOCREQ message in this step;

Step 802:SPS utilizes thereon the information of the color ring user of registration in advance, MSISDN according to the called subscriber in the LOCREQ message of being received judges whether this called subscriber is the user who has registered Ring Back Tone service, if, then SPS is the GT of SPS with the calling address information change of the SCCP in the LOCREQ message, LOCREQ message after will changing again sends to HLR, then execution in step 803 and subsequent step; Otherwise, finish calling procedure according to normal call flow in the cdma system, finish this flow process then; Wherein, in this step, be that the purpose of the GT of SPS is: make in subsequent step, to be transmitted back to SPS from LOCREQ response (locreq) message that HLR returned with SCCP calling address information change; Wherein, in this step, if SPS judges that obtaining the called subscriber is the user who has registered Ring Back Tone service, then SPS is also with the value that the sign of the MSC in the message (MSCID) is set to set in advance in the LOCREQ message of being received, this value that sets in advance is a value unique in the cdma system, in order to be different from other MSC; The purpose that this value is set is: because the particularity of CDMA agreement, as calling and called user the time at same MSC, do not carry TLDN in the locreq message, method then provided by the present invention in the case can't utilize subsequent step to realize Coloring Ring Back Tone, for avoiding the generation of this situation, revise the MSCID in the LOCREQ message in this step, deception HLR makes it think that the calling and called user is not at same MSC;

After step 803:HLR receives the LOCREQ message of sending via SPS, MSISDN according to the called subscriber in this message searches the TLDN that obtains the called subscriber, then, HLR returns locreq message to O_MSC/GMSC, according to the change that SPS did in the step 802, in this step, this locreq message at first sends on the SPS, carry called subscriber's TLDN in this message, SPS notes called subscriber TLDN entrained in the locreq message of receiving;

After step 804:SPS receives locreq message, called subscriber's entrained in this message TLDN is replaced by virtual TLDN, this virtual TLDN is the virtual address that realizes the AIP of this Ring Back Tone service correspondence, and then, the locreq message after SPS will change sends to O_MSC/GMSC; Wherein, in this step, SPS is the value that is set to set in advance of the MSCID in the locreq message also, with so that O_MSC/GMSC thinks that the calling and called user is not at same MSC;

After step 805:O_MSC/GMSC receives the locreq message that SPS sends, according to the virtual TLDN in this message, send initial address message (IAM) to AIP, according to the configuration of the Signaling System Number 7 route data that carries out in advance, in this step, this IAM message at first sends to SPS; Entrained information comprises virtual TLDN and rear subscriber number in this IAM message, and the destination address of this IAM message is the address of the pairing AIP of virtual TLDN;

After step 806:SPS receives the IAM message of O_MSC/GMSC transmission, the called subscriber's that utilization is write down in step 803 real TLDN, virtual TLDN entrained in this IAM message is changed to the real TLDN of called subscriber, and the called subscriber's that SPS write down MSISDN is added in this IAM message, then message is routed to corresponding AIP;

After step 807:AIP receives the IAM message that SPS sends, real TLDN according to called subscriber entrained in this message, calling to this called subscriber's correspondence stops MSC (T_MSC) transmission IAM message, carries calling subscriber's number and called subscriber's real TLDN in this IAM message;

After step 808～step 810:T_MSC receives IAM message, the corresponding called subscriber of paging, paging is arrived after the corresponding called user, T_MSC sends Address Complete Message (ACM) to AIP, and AIP sends ACM message to the O_MSC/GMSC of Calling Side again, in embodiments of the present invention, ACM message is through SPS, in other embodiment of the present invention, ACM message also can be without SPS, and whether ACM relies on relevant route data configuration via SPS;

Step 811:AIP is according to MSISND number and/or the rear subscriber number of the called subscriber in the IAM message of being sent in the step 806, utilize speech channel shown in Figure 3 to play the Comfort Noise Generation (CNG) that the called subscriber customizes in advance to the calling subscriber, and AIP falls the common ring back tone shielding that called subscriber end office (EO) is sent simultaneously;

Step 812～step 814: when called subscriber answer, T_MSC sends answer charging (ANC) message to AIP, after AIP receives this message, stop to play Comfort Noise Generation (CNG), then, AIP sends ANC message to the O_MSC/GMSC of Calling Side again, in embodiments of the present invention, ANC message is through SPS, in other embodiment of the present invention, ANC message also can be without SPS, and whether ANC relies on relevant route data configuration via SPS, utilize above-mentioned steps, connect the speech channel between calling subscriber and the called subscriber;

Step 815: calling subscriber and called subscriber utilize speech channel as shown in Figure 3 to converse.

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1, realize the system of Coloring Ring Back Tone in a kind of code division multiple address communication system, it is characterized in that, each attaching position register HLR of mobile communication network side is connected by signaling network with the signal processing system SPS equipment that increases newly separately respectively in this system, this SPS equipment is connected by signaling network with the CRBT center with mobile services switching centre in the code division multiple address communication system, ownership is on the SPS that the user is registered in Coloring Ring Back Tone with this HLR links to each other of HLR, when the called subscriber of Coloring Ring Back Tone has been registered in calling subscriber's calling on SPS, the Gateway Mobile Switching Center GMSC/ mobile services switching centre MSC of Calling Side carries out interacting message via the HLR of SPS and called subscriber's ownership, this SPS utilizes virtual CRBT centre address, the calling that MSC/GMSC initiated of Calling Side is routed to the MSC at called subscriber place via the CRBT center, then, the CRBT center masks the common ring-back tone that the end office (EO) at called subscriber place sends, and plays the Comfort Noise Generation (CNG) of customization to the calling subscriber.

2, system according to claim 1 is characterized in that, described HLR is connected with the SPS equipment that increases newly and comprises:

3, system according to claim 1 is characterized in that, described HLR is connected with the SPS equipment that increases newly and comprises:

4, system according to claim 1 is characterized in that, described SPS equipment directly is connected with described HLR; Described SPS equipment directly with code division multiple address communication system in mobile services switching centre be connected with the CRBT center.

5, system according to claim 1 is characterized in that, described HLR is connected with the SPS equipment that increases newly and comprises:

6, system according to claim 1 is characterized in that described CRBT center is high-grade intelligent peripheral hardware AIP.

7, realize the method for Coloring Ring Back Tone in a kind of code division multiple address communication system, it is characterized in that this method may further comprise the steps:

8, method according to claim 7 is characterized in that, steps A comprises:

Steps A 1: the GMSC/MSC of Calling Side sends LOCREQ message to described SPS;

9, method according to claim 8 is characterized in that, in steps A 2, SPS judges that the called subscriber has registered after the Coloring Ring Back Tone, further comprises:

10, method according to claim 8, it is characterized in that, in steps A 4, SPS further the sign of the MSC in the locreq message be set to one predefined in order to being different from the value of other MSC, and then this locreq message is sent to the MSC/GMSC of Calling Side.

11, method according to claim 7 is characterized in that, step B comprises:

12, method according to claim 7 is characterized in that, the MSC that the center of CRBT described in the step C routes the call to the called subscriber place is:

13, method according to claim 7 is characterized in that, the mind-set calling subscriber plays the Comfort Noise Generation (CNG) of customization and is in the described CRBT of step C:

According to claim 7 or 13 described methods, it is characterized in that 14, described CRBT center is play Comfort Noise Generation (CNG) and comprised:

15, method according to claim 7 is characterized in that, described CRBT center is AIP.

16, method according to claim 7 is characterized in that, after the described step C of step, this method further comprises:

17, method according to claim 16 is characterized in that, described CRBT center stops to play Comfort Noise Generation (CNG) to the calling subscriber, and the speech channel of connecting between calling subscriber and the called subscriber comprises: