Question: What does the MBMS-BMSC-SSM-UDP-Port AVP contain?
Option 1: The destination IP address for IP multicast encapsulation
Option 2: The source UDP port number at the UE for IP multicast encapsulation
Option 3: The Sgi-mb (control) plane source TCP port number at the BM-SC
Option 4: The Sgi-mb (transport) plane source UDP port number at the BM-SC for IP multicast encapsulation of IP multicast datagrams
Explanation: The MBMS-BMSC-SSM-UDP-Port AVP contains the Sgi-mb (transport) plane source UDP port number at the BM-SC, which is used for IP multicast encapsulation of IP multicast datagrams. This information is crucial for proper routing and delivery of multimedia broadcast services in a mobile network.