Distributed integration of legacy PBX system with SIP networks

Details Distributed integration of legacy PBX system with SIP networks Distributed integration of legacy PBX system with SIP networks

2002-11-06

2011-10-18

Ni, Suhan (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S401000, C370S466000

Reexamination Certificate

active

08040873

ABSTRACT:
A telephony communications network supporting translation of private signaling codes for transmission over a private and/or IP network. A digital telephone emits a private signaling code for accessing a particular PBX function. An adapter coupled to the digital telephone translates the private signaling code into a SIP invite, request, response, information, notification message, and/or instant message if the private signaling code is destined for the IP network. If the private signaling code is not destined for the IP network, the private signaling code is not translated and is transmitted over the private network. If the private signaling code is destined for the IP network, the private signaling code is translated into a SIP message and transmitted over the IP network to a SIP user agent. A PBX is also coupled to the adapter that receives the private signaling codes. The codes are transmitted to the PBX for rendering a function for the digital telephone. A SIP telephone aware of the private signaling codes may also access PBX functions by translating private signaling codes into/from SIP messages.

REFERENCES:
patent: 6888839 (2005-05-01), Scoggins et al.
patent: 6985478 (2006-01-01), Pogossiants et al.
patent: 2001/0028649 (2001-10-01), Pogossiants et al.
patent: WO 01/44890 (2001-06-01), None
patent: WO 01/73501 (2001-10-01), None

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