[OSL | CCIE_Voice] Multicast MOH over trunk supported?

[Juan Lopez Hernandez -X (jlopezhe - IBM - INS at Cisco)]

Is it normal that UCM streams MOH in unicast over a trunk, even if the
MRG is setup to use multicast? Perfmon shows unicast is being used, and
the holdee receives MOH (MOH server is multicast enabled, moh source is
multicast enabled and MRG is multicast)
In other words, is multicast MOH supported over a h323 or sip trunk?
Anybody ?
 
cheers,
Juan