Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2005-04-26
2005-04-26
Nguyen, Chau T. (Department: 2663)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S401000, C370S466000
Reexamination Certificate
active
06885658
ABSTRACT:
A method and an apparatus for interworking between internet protocol (IP) telephony protocols includes a call server. The call server includes a first protocol agent for communicating with a first protocol device according to a first protocol. A second protocol agent communicates with a second protocol device according to a second protocol. An interworking agent provides functions usable by the first and second protocol agents to communicate with each other according to a third protocol. The third protocol is a superset of functions provided by the first and second protocols.
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Ingram Denise J.
Li Xuewen
Ress David P.
Utas Gregory Robert
Hyun Soon D
Nguyen Chau T.
Nortel Networks Limited
Withrow & Terranova , PLLC
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