发明名称 |
Methods to Route a Bearer via Circuit Switching to an Internet Protocol Multimedia System Node using Session Initiation Protocol Contact Header |
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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申请公布号 |
US2009268726(A1) |
申请公布日期 |
2009.10.29 |
申请号 |
US20080110124 |
申请日期 |
2008.04.25 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
BUCKLEY ADRIAN;ALLEN ANDREW;BAKKER JOHN-LUC |
分类号 |
H04L12/50 |
主分类号 |
H04L12/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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