Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-11-14
2006-11-14
Bui, Bing Q. (Department: 2614)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C370S912000, C370S913000
Reexamination Certificate
active
07136635
ABSTRACT:
The present invention supports a message protocol on a wireless communication network between the access gateway and the proxy session initiation server. Upon disruption of a communication session with a mobile station, an information packet indication disruption of the communication session is transmitted from the access gateway to the proxy session initiation protocol server. Upon receipt of the information packet, the proxy session initiation server initiates a resource release procedure freeing network resources supporting the communication session. The proxy session initiation server releases the resources and transmits an information packet to the serving session initiation server, which also initiates a release procedure. Answer and acknowledgement messages are also sent in response to the release request and/or the release of resources.
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Bharatia Jayshree
Bienn Marvin
Chowdhury Kuntal
Bui Bing Q.
Hemingway D. Scott
Hemingway & Hansen LLP
Nortel Networks Limited
Pipes Malcolm W.
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