Patent ID: 8984146
Filing Date: 2015-03-17
Classification: H04L

Abstract:
1. A method in a User Equipment (UE) for communicating with an IP Multimedia Subsystem (IMS) network node utilizing Session Initiation Protocol (SIP) signaling, the method comprising: setting an IMS communication service identifier to identify one of a plurality of IMS communication services; setting an IMS application reference to identify one of a plurality of IMS applications to be used for handling the IMS communication service identified by the IMS communication service identifier; generating a SIP message that includes both the IMS communication service identifier and the IMS application reference; and sending the SIP message to the IMS network node to initiate the identified IMS communication service, and wherein an IMS protocol stack forwards the SIP message to the identified one of the plurality of IMS communication services using the IMS communication service identifier.