Interworking between Digital Subscriber Signalling System No. one (DSS1) and Session Initiation Protocol (SIP) for basic call;
Alcatel
This document specifies the interworking between the Digital Subscriber Signalling System No.one (DSS1) as specified in [1] and the Session Initiation Protocol (SIP) as specified in [2]. SIP is an Internet application-layer control protocol for creating, modifying, and terminating sessions with one or more participants. These sessions include, in particular, telephone calls. The interworking SHALL be described from DSS1 viewpoint for the basic call procedures.