System and method for interfacing legacy IP-PBX systems to...

Details System and method for interfacing legacy IP-PBX systems to... System and method for interfacing legacy IP-PBX systems to...

2003-12-19

2010-12-14

Yao, Kwang B (Department: 2473)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S401000, C370S409000, C370S410000, C370S467000, C370S475000, C709S245000, C709S246000, C379S900000

Reexamination Certificate

active

07852859

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.

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