发明申请
US20090268726A1 Methods to Route a Bearer via Circuit Switching to an Internet Protocol Multimedia System Node using Session Initiation Protocol Contact Header
有权
通过电路交换将承载路由到使用会话发起协议联系头的因特网协议多媒体系统节点的方法
- 专利标题： Methods to Route a Bearer via Circuit Switching to an Internet Protocol Multimedia System Node using Session Initiation Protocol Contact Header
- 专利标题（中）： 通过电路交换将承载路由到使用会话发起协议联系头的因特网协议多媒体系统节点的方法
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申请号： US12110124申请日： 2008-04-25
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公开(公告)号： US20090268726A1公开(公告)日： 2009-10-29
- 发明人: Adrian Buckley , Andrew Allen , John-Luc Bakker
- 申请人： Adrian Buckley , Andrew Allen , John-Luc Bakker
- 申请人地址： CA Waterloo
- 专利权人： RESEARCH IN MOTION LIMITED
- 当前专利权人： RESEARCH IN MOTION LIMITED
- 当前专利权人地址： CA Waterloo
- 主分类号： H04L12/50
- IPC分类号： H04L12/50
摘要：
A method of call routing is provided. The method comprises receiving a session initiation protocol (SIP) INVITE message that contains a uniform resource identifier (URI) of a called party and that identifies that a bearer for a call to the called party is to be set-up at least in part over the circuit switching domain. The method also comprises determining a digit string associated with the URI. The method also comprises sending a SIP informational response message having a contact header that contains information based on the digit string.
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