Section: 17.5.7.1 BM-SC Initiated Multicast Service Deactivation
Content: This section defines the BM-SC initiated Multicast Service Deactivation procedure. Figure 32a: BM-SC initiated MBMS Service deactivation procedure 1. The BM-SC sends an ASR to the GGSN, indicating that the UE shall be removed from the multicast service. The session to be terminated is uniquely identified by the Diameter session-id. 2. Upon reception of the ASR, the GGSN sends an ASA to the BM-SC 3. Upon reception of the ASR the GGSN sends an MBMS UE Context Deactivation Request to the SGSN. The IP multicast address, APN and IMSI together identify the MBMS UE Context to be deleted by the SGSN. Steps from 5 to 9 of figure 32 in section 17.5.7 follow.