Architecture for transporting PBX signaling codes via SIP

Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network

Reexamination Certificate

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C370S236000, C370S467000, C370S401000, C709S228000, C709S229000

Reexamination Certificate

active

07002912

ABSTRACT:
An integrated PBX and SIP telephony communications network supporting transmission of private signaling codes over SIP. A telephone emits a private signaling code for accessing a particular PBX function. An enhanced IP translator coupled to the telephone encapsulates the private signaling code within a SIP invite, request, response, information, notification message, and/or instant message. The SIP message with the encapsulated private signaling codes is transmitted over a communications network to a PBX. The PBX is also coupled to an enhanced IP translator that receives the SIP message and decapsulates the embedded private signaling codes. The codes are transmitted to the PBX for rendering a function for the telephone. A SIP user agent aware of the private signaling codes may also access functions provided by the PBX by encapsulating/decapsulating private signaling codes into/from SIP messages.

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