We have a CUCM publisher and 2 subscribers. Can we connect a unique fixed audio source to each of the 3 servers and configure the phones to play one of these 3 depending upon which Media Resource Group List they are in? Or, are we limited to 1 fixed audio source for the entire CUCM cluster?
Yes, if you setup the MOH as multicast, the loop will play continuously and phones will join the multicast at a random point when put on hold.
Hope this helps.