Question: In an MSC Server enhanced for ICS/MSC Server enhanced for SRVCC with SIP/CS-MGW supporting Multimedia Telephony compliant ECN, what is the requirement for procedures related to MGCF and IM-MGW?
Option 1: The server may choose to support either the MGCF or IM-MGW procedures.
Option 2: The server shall support the procedures for both MGCF and IM-MGW.
Option 3: Support for MGCF procedures is mandatory, but IM-MGW procedures are optional.
Option 4: The server is exempt from supporting the procedures for Multimedia Telephony compliant ECN related to MGCF and IM-MGW.
Explanation: This answer is correct because, according to the specification, if the MSC Server supports Multimedia Telephony compliant ECN, it must support procedures for both MGCF (Media Gateway Control Function) and IM-MGW (IP Multimedia Media Gateway), ensuring seamless interworking and proper handling of multimedia sessions for interoperability and service quality.