Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2005-09-06
2005-09-06
Ngo, Ricky (Department: 2663)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S354000, C370S401000, C370S466000
Reexamination Certificate
active
06940846
ABSTRACT:
A system for the handling of calls by a packet-based telephony system by which calls invoking features not implemented on the packet-based system are handed off to an existing legacy circuit-switched telephony system for further processing. Initial address messages are forwarded to a packet network feature server, which determines whether the features invoked by the call can be provided. If not, the feature server assigns the call a trunk selection parameter according to the type of feature invoked. The trunk selection parameter is conveyed to a connection gateway, which routes the call on one of a plurality of voice trunks. The call is received by a circuit-switched switching system for further processing according to the feature invoked.
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Frey Alan Eugene
Kipp Lyle Dean
Mahajan Om Prakash
Moshenberg David D.
O'Reilly Gerard P.
Hyun Soon D.
Lucent Technologies - Inc.
Ngo Ricky
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