Section: 19.2.2.2 Service Provided by the BM-SC in visited PLMN
Content: Figure 31a: Deactivation of an MBMS multicast service in roaming scenario with service provided in the visited PLMN 1. Upon receiving the leave indication, the GGSN sends an STR to the BM-SC in visited PLMN, indicating that the roaming UE is requesting to leave the multicast service. The session to be terminate is uniquely identified by the Diameter session-id. 2. Upon reception of the STR, the BM-SC in visited PLMN verifies that the IP multicast address corresponds to a valid MBMS bearer service and sends an STR to the BM-SC in home PLMN. 3. The BM-SC in home PLMN responds the BM-SC in visited PLMN with an ST-Answer. 4. Upon reception of the STA, the BM-SC in visited PLMN sends an STA to the GGSN that orignated the Leave Indication. The APN shall be the same that was provided during service activation. 5. The GGSN deletes the MBMS UE Context and sends an STR to the BM-SC in visited PLMN to confirm the successful deactivation of the MBMS UE Context. 6. The BM-SC in visited PLMN, then, delets the MBMS UE Context and sends a confirmation to the GGSN in an STA message.