WO2004095788A1 - System and method for routing telephone calls involving internet protocol network - Google Patents
System and method for routing telephone calls involving internet protocol network Download PDFInfo
- Publication number
- WO2004095788A1 WO2004095788A1 PCT/US2004/007683 US2004007683W WO2004095788A1 WO 2004095788 A1 WO2004095788 A1 WO 2004095788A1 US 2004007683 W US2004007683 W US 2004007683W WO 2004095788 A1 WO2004095788 A1 WO 2004095788A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- routing
- internet protocol
- instrument
- called party
- call
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/64—Distributing or queueing
- H04Q3/66—Traffic distributors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/64—Hybrid switching systems
- H04L12/6402—Hybrid switching fabrics
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/1285—Details of finding and selecting a gateway for a particular call
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2242/00—Special services or facilities
- H04M2242/04—Special services or facilities for emergency applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2242/00—Special services or facilities
- H04M2242/14—Special services or facilities with services dependent on location
-
- 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
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13034—A/D conversion, code compression/expansion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13091—CLI, identification of calling line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13141—Hunting for free outlet, circuit or channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/1337—Operator, emergency services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13389—LAN, internet
Definitions
- Location information is important, for example, when one needs to perform a service for a caller and may need to independently ascertain the caller's location without input from the caller.
- An example of such a situation is a special number call, such as a 9-1-1 emergency services call.
- Emergency service 9-1-1 calls will be employed herein as an exemplary embodiment of the present invention for purposes of illustration and explanation only and not for purposes of limiting the scope of the invention to special number calls only.
- VoIP Voice over IP
- the system of the invention is preferably embodied in an emergency services call system in which the called party instrument is a communication device located in a public safety answering point.
- a method for routing a telephone call from a calling party instrument to at least one selected called party instrument among a plurality of called party instruments and involving at least one internet protocol network includes the steps of: (a) in no particular order: (1) providing a first internet protocol interface apparatus effecting a first communicative coupling between the calling party instrument and the at least one internet protocol network; (2) providing a second internet protocol interface apparatus effecting routing the telephone call according to routing criteria to establish a second communicative coupling between the at least one internet protocol network and the selected called party instrument; and (3) providing a call routing system apparatus coupled with at least the second internet protocol interface apparatus; the call routing system apparatus containing stored information relating to a geographical or geospatial relationship of the calling party instrument and the plurality of called party instruments; and (b) operating the call routing system apparatus and at least the second internet protocol interface apparatus to cooperate in using the stored information to establish the routing
- the present invention is amenable to use for routing any type of telephone call involving at least one internet protocol (IP) network, including routing special number calls.
- IP internet protocol
- emergency service E9-1-1 calling will be employed in this description to illustrate the system and method of the invention.
- Prior art traditional wireline E9-1-1 calls are routed and delivered within a specific geographic area, such as a serving area for an E9-1-1 tandem. Routing is typically accomplished using static tables that correlate a street address to an Emergency Service Number (ESN), which translates to a specific Public Safety Answering Point (PSAP). Routing is sometimes effected by translating static street addresses into latitude and longitude coordinates that may be employed by Selective Routing Databases using spatial query algorithms to determine the corresponding ESN.
- ESN Emergency Service Number
- PSAP Public Safety Answering Point
- a non- emergency services special number call system e.g., an N-l-1 system
- N-l-1 systems include a 3-1-1 (urgent but not emergency calls) and 5-1-1 (traffic inquiry calls).
- a called party instrument may be embodied in a communication device or in an automated system for service delivery.
- the VoIP call manager apparatus queries the emergency call routing system, passing the location and/or calling instrument identifier (for example, telephone number (TN)) of the caller.
- the emergency call routing system uses the calling instrument identifier to look up the stored location (if location is not provided by the call manager apparatus), callback telephone number (TN) of the calling device (if different from the calling instrument identifier), and subscriber information related to the calling party.
- the location may be used by the emergency call routing system to determine the serving PSAP by performing a geospatial query against PSAP jurisdictional boundaries or using some other non-spatial determination method.
- the emergency call routing system returns the ESRN, ESQK, and MG Address to the VoIP call manager apparatus, and the call manager apparatus cooperates with the local media gateway to route the call via the IP network to the PSTN using the ESQK as the Calling Party Number and the ESRN as the Called Party Number.
- the PSTN routes the call to a terminating Emergency Communications Network (ECN) switch.
- ECN switch may be a Class 5 switched provided by the Incumbent Local Exchange Carrier (ILEC), Competitive Local Exchange Carrier (CLEC), or a third party provider who owns the ECN switch.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2520774A CA2520774C (en) | 2003-03-29 | 2004-03-11 | System and method for routing telephone calls involving internet protocol network |
BRPI0408816-6A BRPI0408816A (en) | 2003-03-29 | 2004-03-11 | system and method for routing telephone calls involving an internet protocol network |
EP04719858A EP1609278A4 (en) | 2003-03-29 | 2004-03-11 | System and method for routing telephone calls involving internet protocol network |
MXPA05010321A MXPA05010321A (en) | 2003-03-29 | 2004-03-11 | System and method for routing telephone calls involving internet protocol network. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/402,741 US6963557B2 (en) | 2003-03-29 | 2003-03-29 | System and method for routing telephone calls involving internet protocol network |
US10/402,741 | 2003-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004095788A1 true WO2004095788A1 (en) | 2004-11-04 |
Family
ID=32989788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/007683 WO2004095788A1 (en) | 2003-03-29 | 2004-03-11 | System and method for routing telephone calls involving internet protocol network |
Country Status (9)
Country | Link |
---|---|
US (1) | US6963557B2 (en) |
EP (1) | EP1609278A4 (en) |
CN (1) | CN1768513A (en) |
AR (1) | AR043939A1 (en) |
BR (1) | BRPI0408816A (en) |
CA (1) | CA2520774C (en) |
MX (1) | MXPA05010321A (en) |
PE (1) | PE20050209A1 (en) |
WO (1) | WO2004095788A1 (en) |
Cited By (1)
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US8681782B2 (en) | 2005-02-22 | 2014-03-25 | Sprint Spectrum L.P. | Method and system for routing a voice-over-packet emergency services call to an appropriate public safety answering point (PSAP) |
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Also Published As
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MXPA05010321A (en) | 2005-11-17 |
US20040190497A1 (en) | 2004-09-30 |
CA2520774C (en) | 2013-07-30 |
CN1768513A (en) | 2006-05-03 |
AR043939A1 (en) | 2005-08-17 |
CA2520774A1 (en) | 2004-11-04 |
US6963557B2 (en) | 2005-11-08 |
EP1609278A4 (en) | 2010-05-05 |
BRPI0408816A (en) | 2006-04-04 |
EP1609278A1 (en) | 2005-12-28 |
PE20050209A1 (en) | 2005-03-22 |
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