Refreshing a session initiation protocol (SIP) session

Details Refreshing a session initiation protocol (SIP) session Refreshing a session initiation protocol (SIP) session

2006-10-10

2011-10-11

Ton, Dang T (Department: 2475)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S352000, C370S392000

Reexamination Certificate

active

08036215

ABSTRACT:
In one embodiment, a session is refreshed using a message that is simplified for refresh purposes. The refresh message that is used is a message used for another purpose in a protocol (e.g., SIP). For example, a reINVITE message may be used as a refresh message. If the reINVITE message is used for its intended purpose, the reINVITE message may be used to change the characteristics of a session. This reINVITE message includes an SDP and full header such that the parameters can be properly changed. However, the reINVITE message may be used to refresh a session. This may be referred to as a simple refresh message. But, the simple refresh message does not include an SDP or any other message body. The simple refresh message includes only a reduced header. This reduces time spent building and parsing the simple refresh message.

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