WO2005077054A2 - Emergency call completion for voip based on location of call originator - Google Patents
Emergency call completion for voip based on location of call originator Download PDFInfo
- Publication number
- WO2005077054A2 WO2005077054A2 PCT/US2005/004090 US2005004090W WO2005077054A2 WO 2005077054 A2 WO2005077054 A2 WO 2005077054A2 US 2005004090 W US2005004090 W US 2005004090W WO 2005077054 A2 WO2005077054 A2 WO 2005077054A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- call
- telephone number
- emergency
- physical location
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
- H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
- H04M3/5116—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing for emergency applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/401—Support for services or applications wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/52—Network services specially adapted for the location of the user terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/42348—Location-based services which utilize the location information of a target
- H04M3/42357—Location-based services which utilize the location information of a target where the information is provided to a monitoring entity such as a potential calling party or a call processing server
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2242/00—Special services or facilities
- H04M2242/04—Special services or facilities for emergency applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2242/00—Special services or facilities
- H04M2242/30—Determination of the location of a subscriber
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/42025—Calling or Called party identification service
- H04M3/42034—Calling party identification service
- H04M3/42042—Notifying the called party of information on the calling party
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/42348—Location-based services which utilize the location information of a target
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber
Definitions
- the present invention relates to a completing emergency calls placed from telephone devices connected to a data network.
- Telephone numbers typically include an area code, and a seven digit telephone number.
- the seven digit telephone number includes a three digit central office number, and four digit central office extension.
- the three digit central office number directs calls to a particular central office. Once the call reaches the desired central office, the four digit extension directs the call to a line that is served by that central office.
- Area codes are typically used for long distance phone calls, as discussed below.
- Each area code corresponds to a particular group of central offices.
- the central office analyzes the dialed number. If the dialed number is located within the Local Transport and Access Area (LATA), then the call is directed to the appropriate central office.
- LATA Local Transport and Access Area
- a LATA, or local calling area is typically a contiguous geographic area. If the dialed niunber is outside of the LATA, the local central office checks its database to determine which long distance company the user has selected for making the call. The local central office then switches the call to lines that are connected to the long distance company's nearest switch, often referred to as a point of presence (POP).
- POP point of presence
- the long distance company receives the call, it analyzes the phone number and routes the call across the long distance network to the POP that is closest to the called number. That POP routes the call back to a local central office that is near the destination phone, which then completes the call as described above.
- the local and long distance companies incur costs for the equipment, switching calls, and maintaining their equipment. All of these costs are eventually passed on to the consumer. Because local calls involve one or two switching stations owned by one company, the costs of a local telephone call are typically low. Typically, a consumer pays a fixed fee for a unlimited amount of local calls.
- the present invention provides the capability for emergency calls placed from telephone devices connected to a data network to be completed to the appropriate public safety answering point (PSAP).
- a method for completing an emergency call comprises receiving a call from a device on a data network, the call destined for an emergency service, the device having a physical location, obtaining a telephone number of an emergency call center that handles emergency calls for the physical location of the device, and routing the call to the emergency call center using the telephone number.
- the call may be placed by dialing 911.
- the telephone number of the emergency call center may be obtained based on a telephone number of the device.
- the telephone number of the emergency call center may be a physical telephone number on a switched telephone network.
- the data network may comprise the Internet.
- an apparatus connected to a data network is operable to receive a call from a device on the data network, the call destined for an emergency service, the device having a physical location, the apparatus further operable to obtain a telephone number of an emergency call center that handles emergency calls for the physical location of the device and to route the call to the emergency call center using the telephone number.
- the call may be placed by dialing 911.
- the telephone number of the emergency call center may be obtained based on a telephone number of the device.
- the telephone number of the emergency call center may be a physical telephone number on a switched telephone network.
- the data network may comprise the Internet.
- FIG. 1 is a diagram showing an overview of an exemplary system according to one alternative embodiment of the present invention.
- FIG. 2 is a diagram depicting an overview of an alternative exemplary system according to one adaptive aspect of the present invention.
- FIG. 3 is a diagram depicting another exemplary embodiment of the present invention.
- FIG. 4 is a diagram showing another exemplary embodiment of the present invention.
- FIG. 5 is a diagram showing another exemplary embodiment of the present invention.
- the present invention seeks to remedy at least one of the needs found in the conventional art noted above.
- VoIP Voice-over- Internet-Protocol
- the present invention provides optional methods, systems, and supporting apparatus for minimizing or managing the costs of long distance calls by transmitting data (including voice or video related data) over computer networks.
- the present invention provides a method and apparatus for transmitting voice information between originating and destination points.
- the originating and destination points may include, but are not limited to telecommunication devices including telephones of all types, fax machines, pagers, computers, two way radios, cellular telephones and telephones operatively connected to the public switched telephone network (PSTN).
- PSTN public switched telephone network
- the present invention provides a method and apparatus for minimizing the cost of a long distance call by transporting voice traffic over computer networks.
- the present invention comprises a method and apparatus for transmitting voice infonnation between originating and destination points.
- the originating and destination points may include, but are not limited to, telephones, fax machines, pagers, computers, two way radios, cellular telephones, or telephones operatively connected to the public switched telephone network (PSTN).
- PSTN public switched telephone network
- the originating and destination points are telephones operatively connected to the PSTN.
- the two telephones can be, but do not have to be, operatively connected to separate networks, and each network is operatively connected to its own intermediate point.
- the intermediate points which are preferably operatively connected by a computer network, allow the two telephone users to communicate based on the virtual number that is entered by the user of the originating telephone.
- the phrase "telephony” as inclusively used herein refers to the art of transmitting voice, and optionally data, video, or other signals over a distance greater "than what can be transmitted by shouting.” See, Newton's Telecom Dictionary, by Harry Newton, 20 th Ed., CMP Books, March 2004.
- the phrase “telephony” is related to the phrase telecommunications and has been used interchangeably in past years. Telecommunications has been broadly defined as the art and science of "communicating" over a distance via the switching of signals (electronic, optical, or otherwise). See also, Newton's Telecom Dictionary, by Harry Newton, 20 th Ed., CMP Books, March 2004.
- the present disclosure discusses placing a voice-call, more is intended, and as used herein the phrases telephony or telecommunications are not to be interpreted restrictively, but instead broadly to encompass more than just voice communications transferred over a distance.
- two selected routing devices are distributed at differing geographic regions.
- Each routing device is operatively connected to a computer system such that they are capable of communicating with each other.
- Each of the routing devices may have a different construction and differing level of sophistication, and each is also operatively connected to one or more originating or destination networks to receive and process telephone calls.
- gateway constructs, gateway concepts, or gateway systems, particularly on data networks often perform code or protocol conversions, access data tables, preset instructions, etc. and generally make communication happen between otherwise incompatible networks.
- the area code of the virtual number is preferably within the local calling area of the originating telephone.
- each virtual number is assigned to a destination telephone.
- the assignment information is stored in a memory, and can be referenced to determine which destination telephone number a virtual number is assigned to.
- the memory may, but does not have to be, operatively connected to the two intermediate points. Operatively connecting a memory to each of the two intermediate points allows the delay between receiving a number and determining its destination to be minimized.
- the . call may be routed from the first intermediate point to a second intermediate point that is within the local calling area of the destination telephone.
- the second intermediate point then directs the call to the destination telephone.
- the two intermediate points can direct a call to any destination number, regardless of the distance between the two telephones. This allows a user to access a long distance telephone using only a local virtual phone number, and provides the advantage of reducing the cost of the call.
- Information may be transmitted on the originating and destination networks in any manner known to those skilled in the art. This may include information in analog or digital format, or in any format developed in the future. Additionally, any type of information may be transmitted between the two points on the originating and destination networks. This may include, but is not limited to, voice, data, or facsimile transmissions.
- the present invention comprises a set of routers distributed at different geographical areas. Each router is operatively connected to a computer network such that they are capable of communicating with each other. Each of the routers is preferably operatively connected to one or more originating or destination networks to receive and process telephone calls. [0029]
- the router is preferably capable of providing an interface between a central office and the computer network. This may include, but is not limited to, converting data into a format capable of transmission over the computer network.
- the router may comprise any computing device known to those skilled in the art.
- the router may comprise a processor, such as a computer. Alternately, the router may comprise a router that is modified to interpret phone numbers and convert voice signals into data packets.
- the router may comprise a server, or proxy server.
- the router receives and interprets a virtual phone number transmitted from an originating network. After processing a phone number to determine its destination, the router connects to another router that is connected to the destination network. Once a connection is established between the originating and destination routers, the originating router converts the voice data into data packets using a desired protocol, for example, VoIP or VoP. Preferably, the process of converting the voice signals into data packets is performed on a real-time, continuous basis. Each router can also be capable of converting the data packets back into voice data on a real-time, continuous basis. Such conversion, however, need not be performed by the router.
- a virtual phone number is assigned to a phone number on the destination network ("physical number").
- the virtual phone number is assigned to a local router, such as a proxy server. This may be done by updating the memory that stores the virtual numbers and the physical number that they are assigned to.
- Each virtual phone number serves as a alias for, and directs calls to, a destination physical number.
- the virtual phone number does not exist on any physical device on the originating or destination network. Thus, calls do not have to be routed through any physical device on the originating or destination networks, which reduces the complexity and costs of routing a call.
- an exemplary system includes a user 101 placing a call to a user 103 employing VOIP technology.
- user 101 dials a "virtual number" assigned to user 103 (for example number 202-424-XXXX), which is a local call for user 101.
- the call accesses a routing device or routing system 105 that accesses a routing data assembly 107 to understand where and how to respond to the "virtual number" assigned to user 103.
- routing device 105 may include a complete routing system or series of communications elements depending upon design. Once routing information is obtained the call is transferred.
- routing device 109 accesses a routing data assembly 113 to confirm the identity and "address identifier" of user 103 and enables a direct connection to user 103.
- user 103 physically moves their connection to computer network 111 to a new physical location 160. For example, user 103 moves from Seattle to Paris, thereby employing a different network access portal.
- a new "address location" is created at a call processing center (not shown) for connecting device or system 1097
- routing device 105 transfers a call through network 111 to router 109.
- the call is transferred from device 105 to device 109, the virtual numbers of their equivalents are included in the transmitted information.
- device communicates with database 113 to determine a preferred address the virtual number is assigned to.
- device 109 determines that the destination number is, for example 732-528-XXXX, which corresponds to user 103.
- a connection is then established between device 109 and user 103.
- This connection may include, but is not limited to a connection via selected Internet protocols.
- users 101 and 103 may communicate without incurring typical long distance charges.
- user 103 may transport their VOIP device geographically to new location 160 and employ all the unique benefits noted above.
- Fig. 2 a diagram showing another alternative exemplary embodiment of one alternative aspect of the present mvention enables multiple virtual numbers, commonly local area call phone numbers, to reach a geographically distant location at local calling prices.
- a plurality of multiple virtual numbers 201, 150 may be assigned to a virtual address identifier 152 for a VOIP subscriber 103 having a connection to the Internet via connecting network and routing device 109.
- each routing device may be accessed using a plurality of known virtual numbers.
- Each virtual number preferably allowing an originating user (for example user 101) to dial a number within their local area code to access a designated destination user 103, 103.'
- multiple users may communication, simultaneously or independently, with user 103 via device 109 which may be configured to receive virtual calls from a plurality of lines 201, 150 and rout each one to address identifier 152.
- one or more virtual numbers may be assigned to multiple physical numbers 301.
- a virtual number may be used to call more than one physical number 301, individually or simultaneously. These calls may be directed to assigned physical numbers 301 (numbers 155, 156, 157) in any desired manner, either individually in series, or broadcast in parallel.
- a virtual number 303 may be assigned such that server device or routing device 109 rings physical devices 301 all at once, or one at a time. Information regarding the order, sequence, timing, and other preferences relating to call routing may be stored in data assembly described as data system 113.
- the call is routed to the number that answers first, if each number rings one at a time, a user 103 has the option of rolling the call to the next number in a random or pre-selected order.
- a virtual number 157 to a VOIP device a physical pager number 156, and a cellular number 155, each may be rung simultaneously or in a selected order, according to user preferences.
- One convenient aspect of the present invention is understood when a virtual number, assigned to a specific physical device (VOIP device, cellular, pager, real phone, computer, etc.) via a call processing system is easily changed upon a user's request. This type of "readdressing" may be done quickly with minimal effort via simple Internet based programming or voice command.
- VOIP device cellular, pager, real phone, computer, etc.
- the present alternative embodiments and inventions noted above respond to at least one of the needs earlier noted by providing at least one solution to making a long distance call, or any call linked with a virtual number at a substantially lower cost by minimizing or avoiding several of the steps provided by the existing PSTN network [0043]
- the present invention discloses the capacity to broadcast calls to multiple devices in a pre-selected manner, and in other embodiments to receive multiple calls directed to a single address identifier simultaneously or in a selected priority.
- a diagram depicts another exemplary embodiment of the present invention, i this exemplary embodiment, a 911 emergency service may be activated.
- a user of the virtual number telephone service described above may subscribe to 911 emergency service using the components shown in Fig. 4.
- a user uses a data entry system 402, such as a personal computer, telephone, etc.
- a user uses a data entry system 402 over network 111.
- the user transmits physical address information 406 identifying the physical location for which 911 emergency service is to be activated.
- a telephone number corresponding to the physical location of the user's service is also transmitted or associated with the physical address information.
- the physical address infonnation and user telephone number is transmitted via network 111 to database system 404, which is a database storing information including telephone numbers of public safety answering points (PSAPs) that correspond to physical addresses.
- PSAPs public safety answering points
- a PSAP involves a facility, such as a call center, where 911 emergency telephone calls are received and then routed to the proper emergency services.
- the physical address information is preferably translated to geocoding information 408 (geographic information) before transmission to database system 404.
- Database system 404 receives the geocoding information and the user telephone number and maps the user telephone number to a telephone number of the PSAP that serves the user location.
- database system 404 uses the geocoding information to determine the PSAP that serves the physical location and stores one or more database records that map the user telephone number to the telephone number of the PSAP serving the user location.
- Database system 404 transmits a confirmation 410 indicating that the mapping of the user telephone number to the PSAP telephone number has been successfully completed.
- this confirmation causes an email to be sent to the data entry system 402, indicating successful completion of the activation process.
- a diagram depicts another optional and exemplary embodiment of the present invention.
- a 911 emergency service may be utilized.
- a user 502 places a telephone call 504 destined for a 911 emergency service by dialing 911 on a telephone device.
- the telephone call includes a Session Initiation Protocol (SIP) message that includes the user telephone number that for which 911 emergency service was activated in the process shown in Fig. 4.
- SIP Session Initiation Protocol
- the telephone call 504 is received at an apparatus included in network 111, which translates the 911 call into a request for a database lookup including the user telephone number in the form of an automatic number identification (ANI), and transmits the request 506 including the ANI to database system 402.
- Database system 402 looks up the received ANI and retrieves the corresponding PSAP telephone number, which is the telephone number of the PSAP serving the user location that was mapped in the process shown in Fig. 4.
- the PSAP selected is based on the physical location of the user placing the call to 911 and the user telephone number is used as a lookup key to retrieve the telephone number of the PSAP from the database.
- the telephone number of the PSAP is a physical telephone number on the Public Switched Telephone Network (PSTN).
- Database system 402 transmits the PSAP telephone number 508 to an apparatus included in network 111, which routes 510 the 911 call 504 from the user 502 to the PSAP 512 using the PSAP telephone number 508.
- the system included in network 111 may generate a new SIP message including information on the desired call routing and transmit this message to a gateway included in network 111.
- the gateway which interfaces network 111 with the PSTN then obtains the call and routes it 510 to PSAP 512 over the PSTN.
- Call 510 may include the standard information included in a call routed to the PSAP, such as the originating location of the call (the user location), and the ANI of the user device.
- the user 502 then communicates with PSAP 512 as necessary and PSAP 512 may dispatch an emergency response 514 to the user location.
- one aspect of the present invention noted in Figs. 4 and optionally 5 involves receiving calls from geographically arbitrary originating numbers within an area, such as within the well-known North American Numbering Plan (NANP) area, mapping the geographically arbitrary originating number to a geographically significant, unique (and correct for the purpose of resolving an emergency call) PSAP telephone number, and routing the call to that PSAP telephone number.
- NANP North American Numbering Plan
- this information can be can be delivered thru the data network to the
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05713195A EP1719341A4 (en) | 2004-02-10 | 2005-02-10 | Emergency call completion for voip based on location of call originator |
CA2555686A CA2555686C (en) | 2004-02-10 | 2005-02-10 | Emergency call completion for voip based on location of call originator |
AU2005211737A AU2005211737B2 (en) | 2004-02-10 | 2005-02-10 | Emergency call completion for voip based on location of call originator |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/774,689 US7386111B2 (en) | 2004-02-10 | 2004-02-10 | Method and apparatus for placing a long distance call based on a virtual phone number |
US10/774,689 | 2004-02-10 | ||
US10/872,469 | 2004-06-22 | ||
US10/872,469 US7453990B2 (en) | 2004-02-10 | 2004-06-22 | Emergency call completion for VoIP based on location of call originator |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005077054A2 true WO2005077054A2 (en) | 2005-08-25 |
WO2005077054A3 WO2005077054A3 (en) | 2006-08-10 |
Family
ID=34864648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/004090 WO2005077054A2 (en) | 2004-02-10 | 2005-02-10 | Emergency call completion for voip based on location of call originator |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1719341A4 (en) |
AU (1) | AU2005211737B2 (en) |
CA (1) | CA2555686C (en) |
WO (1) | WO2005077054A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007107421A2 (en) * | 2006-03-22 | 2007-09-27 | Nokia Siemens Networks Gmbh & Co. Kg | Method for localization and location-related connection of a mobile voice-over-ip subscriber to an emergency call station |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2467505C2 (en) * | 2008-02-06 | 2012-11-20 | Нокиа Сименс Нетуоркс Ой | Obtaining server identifier based on device location |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002003718A2 (en) | 2000-04-10 | 2002-01-10 | Nokia Corporation | Location based telephony services in mobile ip networks |
US20030063714A1 (en) | 2001-09-26 | 2003-04-03 | Stumer Peggy M. | Internet protocol (IP) emergency connections (ITEC) telephony |
US20030086539A1 (en) | 2001-11-05 | 2003-05-08 | Mccalmont Patti L | Geographic routing of emergency service call center emergency calls |
US20030211839A1 (en) | 2002-01-08 | 2003-11-13 | Baum Robert T. | Methods and apparatus for providing emergency telephone service to IP-based telephone users |
Family Cites Families (3)
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---|---|---|---|---|
US20030109245A1 (en) * | 2001-11-05 | 2003-06-12 | Mccalmont Patti L | Routing of emergency calls based on geographic location of originating telephone end office |
US7330464B2 (en) * | 2002-09-25 | 2008-02-12 | Lucent Technologies Inc. | Location identification for IP telephony to support emergency services |
US7440442B2 (en) * | 2003-10-21 | 2008-10-21 | 3Com Corporation | IP-based enhanced emergency services using intelligent client devices |
-
2005
- 2005-02-10 WO PCT/US2005/004090 patent/WO2005077054A2/en active Application Filing
- 2005-02-10 AU AU2005211737A patent/AU2005211737B2/en not_active Expired - Fee Related
- 2005-02-10 CA CA2555686A patent/CA2555686C/en not_active Expired - Fee Related
- 2005-02-10 EP EP05713195A patent/EP1719341A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002003718A2 (en) | 2000-04-10 | 2002-01-10 | Nokia Corporation | Location based telephony services in mobile ip networks |
US20030063714A1 (en) | 2001-09-26 | 2003-04-03 | Stumer Peggy M. | Internet protocol (IP) emergency connections (ITEC) telephony |
US20030086539A1 (en) | 2001-11-05 | 2003-05-08 | Mccalmont Patti L | Geographic routing of emergency service call center emergency calls |
US20030211839A1 (en) | 2002-01-08 | 2003-11-13 | Baum Robert T. | Methods and apparatus for providing emergency telephone service to IP-based telephone users |
Non-Patent Citations (2)
Title |
---|
ABBOTT N: "Alternatives for providing routing and location information to support emergency calling from IP enterprises", NENA TECHNICAL INFORMATION DOCUMENT, 3 October 2003 (2003-10-03), pages 1 - 16, XP002323684 |
See also references of EP1719341A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007107421A2 (en) * | 2006-03-22 | 2007-09-27 | Nokia Siemens Networks Gmbh & Co. Kg | Method for localization and location-related connection of a mobile voice-over-ip subscriber to an emergency call station |
WO2007107421A3 (en) * | 2006-03-22 | 2007-11-08 | Siemens Ag | Method for localization and location-related connection of a mobile voice-over-ip subscriber to an emergency call station |
US8249055B2 (en) | 2006-03-22 | 2012-08-21 | Nokia Siemens Networks Gmbh & Co. Kg | Method for localization and location-related connection of a mobile Voice-over-IP subscriber to an emergency call station |
Also Published As
Publication number | Publication date |
---|---|
AU2005211737B2 (en) | 2010-03-04 |
EP1719341A4 (en) | 2007-10-31 |
WO2005077054A3 (en) | 2006-08-10 |
CA2555686A1 (en) | 2005-08-25 |
CA2555686C (en) | 2015-04-28 |
EP1719341A2 (en) | 2006-11-08 |
AU2005211737A1 (en) | 2005-08-25 |
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