Patent · US Active

System and method for interfacing legacy IP-PBX systems to SIP networks

US7852859B2 · kind B2 · utility

6Cited by

4References

10Claims

0Family size

Assignee

Alcatel Lucent · FR

Inventors

Michael S. Wengrovitz · Concord, US
Andrew Nelson · San Francisco, US

Key dates

Filing date	Dec 19, 2003
Grant date	Dec 14, 2010
Priority date	—
Expiry date	Nov 22, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S379/90
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A system and method for integrating a legacy IP-PBX to a session initiation protocol (SIP) network supporting one or more SIP sets. A SIP-PBX proxy server coupled to the legacy IP-PBX and the SIP network maintains a logical IP set for each SIP set on the SIP network. The logical IP set is configured to maintain IP-based signaling and media connectivity with the legacy IP-PBX. The SIP-PBX proxy server receives media directed to a logical IP set associated with a particular SIP set, and redirects the media to the particular SIP set. In doing so, the SIP-PBX converts messages that adhere to a private, vendor-specific protocol, to messages that adhere to the SIP protocol.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.