Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; TISPAN; PSTN/ISDN simulation services: Communication Diversion (CDIV); Protocol specification (V8.14.0; 3GPP TS 24.504 version 8.14.0 Release 8)
"The present document specifies the@ stage three@ Protocol Description of the Communications Diversion (CDIV) services@ based on stage one and two of the ISDN Communication diversion supplementary services. Within the Next Generation Network (NGN) the stage 3 description is specified using the IP Multimedia Communication Control Protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP). In addition@ a service ""Communication Diversion Notification"" (CDIVN) to the CDIV PSTN/ISDN simulation services is described in the present document."