Invention Grant
US08621084B2 Methods to route a bearer via circuit switching to an internet protocol multimedia system node using session initiation protocol contact header
有权
通过电路交换将载体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
- Patent Title: Methods to route a bearer via circuit switching to an internet protocol multimedia system node using session initiation protocol contact header
- Patent Title (中): 通过电路交换将载体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
-
Application No.: US12110124Application Date: 2008-04-25
-
Publication No.: US08621084B2Publication Date: 2013-12-31
- Inventor: Adrian Buckley , Andrew Allen , John-Luc Bakker
- Applicant: Adrian Buckley , Andrew Allen , John-Luc Bakker
- Applicant Address: CA Waterloo, Ontario
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Conley Rose, P.C.
- Agent J. Robert Brown, Jr.
- Main IPC: G06F15/16
- IPC: G06F15/16
Abstract:
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.
Public/Granted literature
Information query
