Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-11-28
2006-11-28
To, Doris H. (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C709S227000, C709S228000, C713S151000
Reexamination Certificate
active
07142537
ABSTRACT:
A third generation (3G) gateway provides the facilities for extending a number of internet protocols between a second generation (2G) network and a 3G network. The various messages of a session initiation protocol (SIP) are extended to provide user identification and server identification subfields. The SIP message extensions facilitate the communication of 2G and 3G networks for the purposes of implementing push-to-talk and dispatch service features.
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Desutter Barbara M.
Hallin Thomas G.
Neyens Edward J.
Shores William N.
Thomas Robert J.
Bogacz Frank J.
Motorola Inc.
To Doris H.
Wills Kevin D.
Wilson Robert W.
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