WO2004002043B1 - Methods and systems for improving trunk utilization for calls to ported numbers - Google Patents

Methods and systems for improving trunk utilization for calls to ported numbers

Info

Publication number
WO2004002043B1
WO2004002043B1 PCT/US2003/020256 US0320256W WO2004002043B1 WO 2004002043 B1 WO2004002043 B1 WO 2004002043B1 US 0320256 W US0320256 W US 0320256W WO 2004002043 B1 WO2004002043 B1 WO 2004002043B1
Authority
WO
WIPO (PCT)
Prior art keywords
call
message
media gateway
media
setup message
Prior art date
Application number
PCT/US2003/020256
Other languages
French (fr)
Other versions
WO2004002043A2 (en
WO2004002043A3 (en
Inventor
Peter Joseph Marsico
Original Assignee
Tekelec Us
Peter Joseph Marsico
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tekelec Us, Peter Joseph Marsico filed Critical Tekelec Us
Priority to EP03761347A priority Critical patent/EP1535454A4/en
Priority to AU2003253734A priority patent/AU2003253734A1/en
Publication of WO2004002043A2 publication Critical patent/WO2004002043A2/en
Publication of WO2004002043A3 publication Critical patent/WO2004002043A3/en
Publication of WO2004002043B1 publication Critical patent/WO2004002043B1/en

Links

Classifications

    • 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
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/4228—Systems providing special services or facilities to subscribers in networks
    • 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
    • H04M3/4228—Systems providing special services or facilities to subscribers in networks
    • H04M3/42297—Systems providing special services or facilities to subscribers in networks with number portability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/06—Arrangements for interconnection between switching centres using auxiliary connections for control or supervision, e.g. where the auxiliary connection is a signalling system number 7 link

Abstract

Methods and systems for improving trunk utilization for calls to ported numbers are disclosed. A method for improving media trunk utilization for calls directed to ported numbers includes receiving a call setup message associated with the call in a communications network (200) and determining whether the call setup message is directed to a ported number. In response to determining that the call is directed to a ported number, called party information is extracted from the call setup message. A lookup is performed in a number portability database (236) using the called party information to locate a routing number for the called party. A media trunk is selected for the call based on the routing number. The call is then routed through a media gateway (208) associated with the media trunk.

Claims

AMENDED CLAIMS[received by the International Bureau on 06 February 2004 (06.02.04) original claims 1, 8-13, 30, 37-39 amended, new claim 42 added remaining claims unchanged.What is claimed is:
1. A method for improving media trunk utilization for calls directed to ported numbers, the method comprising:
(a) selecting a media trunk to a media gateway for a call in a communications network;
(b) receiving a call setup message associated with the call;
(c) determining whether the call is directed to a ported number;
(d) in response to determining that the call is directed to a ported number, extracting called party information from the call setup message and performing a lookup in a number portability database using the called party information to locate a routing number for the called party;
(e) selecting a media trunk from the media gateway for the call based on the routing number; and
(f) routing the call through the media gateway.
2. The method of claim 1 wherein receiving a call setup message includes receiving an ISUP IAM message.
3. The method of claim 2 wherein receiving an ISUP IAM message includes receiving an ISUP IAM message from a PSTN end office.
4. The method of claim 2 wherein receiving an ISUP IAM message includes receiving an ISUP IAM message from a mobile switching center.
5. The method of claim 1 wherein determining whether the call is directed to a ported number includes examining at least one parameter in the call setup message.
6. The method of claim 1 wherein performing a number portability lookup using called party information includes performing a number portability lookup based on a called party directory number extracted from the call setup message.
28
7. The method of claim 1 wherein selecting a media trunk includes selecting a trunk group and selecting an available trunk within the trunk group.
8. The method of claim 1 wherein routing the call through the media gateway includes formulating an MGCP message based on the call setup message and sending the MGCP message to the media gateway.
9. The method of claim 1 wherein routing the call through the media gateway includes formulating an H.225 message based on the call setup message and sending the H.225 message to the media gateway.
10. The method of claim 1 wherein routing the call through the media gateway includes formulating an SIP message based on the call setup message and sending the SIP message to the media gateway.
11. The method of claim 1 wherein steps (b)-(f) are performed at a media gateway controller.
12. The method of claim 1 wherein steps (b)-(f) are performed at an STP.
13. A system for improving media trunk utilization for calls directed to ported numbers, the system comprising:
(a) a link interface module for receiving a call setup message associated with a call in a communications network;
(b) a discrimination process operatively associated with the link interface module for determining whether the call is directed to a ported number;
(c) a number portability database manager for receiving the call setup message from the discrimination process in response to a determination that the call is directed to a ported number, and, in response, performing a lookup in a number portability database to locate a routing number for the call; (d) a call processor for receiving the call setup message from the number portability database manager and for selecting a media trunk from a media gateway for the call based on the routing number; and
(e) a transporter module operatively associated with the call processor for routing the call through the media gateway.
14. The system of claim 13 wherein the link interface module comprises an SS7 link interface module.
15. The system of claim 13 wherein the link interface module comprises an ATM link interface module.
16. The system of claim 13 wherein the link interface module comprises an IP interface module.
17. The system of claim 13 wherein the discrimination process is adapted to identify ISUP IAM messages as candidates for number portability lookups.
18. The system of claim 17 wherein the number portability database manager is adapted to perform number portability database lookups based on the ISUP IAM messages.
19. The system of claim 13 wherein the call processor is adapted to select a media trunk group based on the routing number in the call setup message and a media trunk in the trunk group based on media trunk availability.
20. The system of claim 19 wherein the call processor is adapted to select a media gateway corresponding to the media trunk.
21. The system of claim 13 wherein the transporter module is adapted to formulate a media gateway control protocol message based on the call setup message and to route the media gateway control protocol message to the media gateway.
22. The system of claim 13 wherein the transporter module is adapted to formulate a session initiation protocol message based on the call setup message and to route the session initiation protocol message to the media gateway.
23. The system of claim 13 wherein the transporter module is adapted to formulate an H.225 message based on the call setup message and to route the H.225 message to the media gateway.
24. The system of claim 13 wherein the link interface module, the discrimination process, the number portability database manager, the call processor, and the transporter module are located within a media gateway controller.
25. The system of claim 13 wherein the link interface module, the discrimination process, the number portability database manager, the call processor, and the transporter module are located within a signal transfer point.
26. The system of claim 24 wherein the number portability database manager is adapted to access a number portability database located within the media gateway controller.
27. The system of claim 24 wherein the number portability database manager is adapted to access a number portability database located external to the media gateway controller.
28. The system of claim 25 wherein the number portability database manager is adapted to access a number portability database internal to the signal transfer point.
29. The system of claim 25 wherein the number portability database manager is adapted to access a number portability database located external to the signal transfer point.
30. A computer program product comprising computer-executable instructions embodied in a computer-readable medium for performing steps comprising:
(a) receiving a call setup message associated with a call in a communications network;
(b) determining whether the call is directed to a ported number;
31 (c) in response to determining that the call is directed to a ported number, extracting called party information from the call setup message and performing a lookup in a number portability database using the called party information to locate a routing number for the called party;
(d) selecting a media trunk from a media gateway for the call based on the routing number; and
(e) routing the call through the media gateway.
31. The computer program product of claim 30 wherein receiving a call setup message includes receiving an ISUP IAM message.
32. The computer program product of claim 31 wherein receiving an ISUP IAM message includes receiving an ISUP IAM message from a PSTN end office.
33. The computer program product of claim 31 wherein receiving an ISUP IAM message includes receiving an ISUP IAM message from a mobile switching center.
34. The computer program product of claim 30 wherein determining whether the call is directed to a ported number includes examining at least one parameter in the call setup message.
35. The computer program product of claim 30 wherein performing a number portability lookup using called party information includes performing a number portability lookup based on a called party directory number extracted from the call setup message.
36. The computer program product of claim 30 wherein selecting a media trunk includes selecting a trunk group and selecting an available trunk within the trunk group.
37. The computer program product of claim 30 wherein routing the call through the media gateway includes formulating an MGCP message based on the call setup message and sending the MGCP message to the media gateway.
32
38. The computer program product of claim 30 wherein routing the call through the media gateway includes formulating an H.225 message based on the call setup message and sending the H.225 message to the media gateway.
39. The computer program product of claim 30 wherein routing the call through the media gateway includes formulating an SIP message based on the call setup message and sending the SIP message through the media gateway.
40. The computer program product of claim 30 wherein steps (a)-(e) are performed at a media gateway controller.
41. The computer program product of claim 30 wherein steps (a)-(e) are performed at an STP.
42. The method of claim 1 wherein step (a) is performed by a calling party end office independently of a destination end office.
33
PCT/US2003/020256 2002-06-25 2003-06-24 Methods and systems for improving trunk utilization for calls to ported numbers WO2004002043A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP03761347A EP1535454A4 (en) 2002-06-25 2003-06-24 Methods and systems for improving trunk utilization for calls to ported numbers
AU2003253734A AU2003253734A1 (en) 2002-06-25 2003-06-24 Methods and systems for improving trunk utilization for calls to ported numbers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/179,859 2002-06-25
US10/179,859 US6914973B2 (en) 2002-06-25 2002-06-25 Methods and systems for improving trunk utilization for calls to ported numbers

Publications (3)

Publication Number Publication Date
WO2004002043A2 WO2004002043A2 (en) 2003-12-31
WO2004002043A3 WO2004002043A3 (en) 2004-03-25
WO2004002043B1 true WO2004002043B1 (en) 2004-05-27

Family

ID=29734998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/020256 WO2004002043A2 (en) 2002-06-25 2003-06-24 Methods and systems for improving trunk utilization for calls to ported numbers

Country Status (4)

Country Link
US (1) US6914973B2 (en)
EP (1) EP1535454A4 (en)
AU (1) AU2003253734A1 (en)
WO (1) WO2004002043A2 (en)

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Also Published As

Publication number Publication date
US6914973B2 (en) 2005-07-05
US20030235285A1 (en) 2003-12-25
EP1535454A2 (en) 2005-06-01
AU2003253734A8 (en) 2004-01-06
WO2004002043A2 (en) 2003-12-31
AU2003253734A1 (en) 2004-01-06
WO2004002043A3 (en) 2004-03-25
EP1535454A4 (en) 2006-04-26

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