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US08285852B2 Method and apparatus for identifying an IMS service 有权
用于识别IMS服务的方法和装置

Method and apparatus for identifying an IMS service
摘要:
An apparatus and method for indicating the IP Multimedia Subsystem (IMS) services to which a Session Initiation Protocol (SIP) message relates. One or more communication service identifiers are added to the SIP message as a Feature Tag.
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