发明名称 METHOD AND APPARATUS FOR ENABLING MULTIMEDIA CALLS USING SESSION INITIATION PROTOCOL
摘要 A communication system for exchanging session initiation protocol signaling messages between a user host associated with a wireless communication device, and a remote user host, through a network, and method therefor. A multiplexer module positioned within the wireless communication device multiplexes call control data, session initiation protocol commands, and packet data setup and status transmitted between the wireless communication device and the network. A control module located in the multiplexer determines whether a packet associated control channel has been set up, and, in response to the packet associated control channel not being set up, the multiplexer module utilizes a slow dedicated control channel for transmitting signaling associated with requesting a packet associated control channel for transmitting the session initiation protocol commands.
申请公布号 US2002105943(A1) 申请公布日期 2002.08.08
申请号 US20010777189 申请日期 2001.02.05
申请人 MOTOROLA, INC. 发明人 WOMACK JAMES E.;PECEN MARK;HOWELL ANDREW
分类号 H04L12/56;H04L29/06;H04W72/12;H04W80/00;(IPC1-7):H04L12/56;H04L12/28;H04Q7/00 主分类号 H04L12/56
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