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. |
申请公布号 |
US8621084(B2) |
申请公布日期 |
2013.12.31 |
申请号 |
US20080110124 |
申请日期 |
2008.04.25 |
申请人 |
BUCKLEY ADRIAN;ALLEN ANDREW;BAKKER JOHN-LUC;BLACKBERRY LIMITED |
发明人 |
BUCKLEY ADRIAN;ALLEN ANDREW;BAKKER JOHN-LUC |
分类号 |
G06F15/16 |
主分类号 |
G06F15/16 |
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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