Signalling Working Group

Based on ITU-T Recommendations concerning SG11 and IETF specifications related mainly to SIP*, the Signaling Working Group develops national standards used in signaling systems adopted by next-generation and other networks. In addition, the working group has responsibility for international standardization activities related to conformance and interoperability testing specifications studied by
ITU-T SG11 and CJK.

* SIP: Session Initiation Protocol