As per CUCM SRND multicast MoH call details, looks the multicast MoH is care the IP address only which means not care the port number.
-cucm configure to 126.96.36.199 port 16384, check mark 'port incremental', g711 codec between MoH server and SRST site IP Phones
-srst configure to 239 1.1..1 port 16444 x.x.x.x x.x.x.x
call establishment between two IP Phones in SRST site and press Hold button on one of IP Phone, the Holdee will receive multicast MoH from local SRST router with IP address 188.8.131.52.
->what about the port requirement at this time? Is the Holdee receiving multicast MoH traffic from 184.108.40.206 with regardness the port or must mach the port (16384) which configured in CUCM? I don't see the port number match requirement from CUCM SRND doc and want to know the exact behavior,