Network, private branch exchange, and multi protocol...

Details Network, private branch exchange, and multi protocol... Network, private branch exchange, and multi protocol...

2004-10-20

2010-02-09

Ngo, Ricky (Department: 2416)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S230000, C370S260000, C370S299000, C370S385000, C370S401000

Reexamination Certificate

active

07660293

ABSTRACT:
There is disclosed a private branch exchange in which an SIP terminal is capable of receiving great variety of services provided by the private branch exchange without upgrading version of software of the SIP terminal itself. A standard SIP protocol control module16, an expanded SIP protocol a control module17, and an expanded SIP protocol b control module18are disposed for SIP system protocol corresponding terminals, convert signals (requests) from the SIP system protocol corresponding terminals into signals of a protocol inside an IP-PBX1to transmit the signals to a PBX basic connection process providing module12, and convert a signal (responses to the request, or a request to the SIP system protocol corresponding terminal) from the PBX basic connection process providing module12into a signal of an SIP system protocol to transmit the signal to the SIP system protocol corresponding terminal.

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