ETSI - TS 183 036
Core Network and Interoperability Testing (INT); ISDN/SIP interworking; Protocol specification
|Publication Date:||1 June 2019|
The present document specifies the stage three protocol description of the signalling interworking between ISDN DSS1 protocol and SIP based on the concatenation of ETSI ES 283 027 , ETSI ES 283 003  with ETSI EN 300 899-1 . The concatenation method describes only the SIP/ISDN parameter mapping without ISUP procedures. In addition direct inter-working not supported by this concatenation of these existing inter-working documents will be described.