Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2011-04-05
2011-04-05
Gauthier, Gerald (Department: 2614)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C455S419000, C455S442000
Reexamination Certificate
active
07920547
ABSTRACT:
A VoIP-UMS accessed via a private branch exchange or an IP-phone using a Session Initiation Protocol (SIP). More particularly, the method has access the VoIP-UMS in which an initial call setup message is sent which includes call information upon accessing the VoIP-UMS for the purpose of using functions, such as voice mail or the like. When a user accesses a voice service system over a network directly from a terminal, the user accesses via an SIP server, or the user accesses via a switching system, the VoIP-UMS can discriminate connected calls easily, and determinate and respond to the calls rapidly because an INVITE message, which is a Session Initiation Protocol message attempting to access the VoIP-UMS, includes an INFO message that is a message on call information.
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Gauthier Gerald
H.C. Park & Associates PLC
Samsung Electronics Co,. Ltd.
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