Method and Apparatus for Signaling the Subscriber Type of IP and Non-IP Subscribers Using the Hostpart of the SIP URI

摘要

To identify a subscriber type of IP and non-IP subscribers with SIP without adding additional signaling elements to existing SIP headers, a method for identification of subscriber type with SIP makes use of the originating subscriber URIs are in form of userpart@hostpart. The userpart uniquely identifies the originating subscriber. A first switch identifies itself to a second switch through the hostpart. The first switch signals via SIP to the second switch the originating subscriber-type by using the hostpart to define a logical grouping identifying the originating subscriber-type.