I have a CUCM and UCCX installed in a Data Centre serving a site across a WAN, on the site there are agents using CAD and a backup SRST router, unicast MoH was streamed across the WAN from CUCM in G729 format and network MoH (ringback.wav file) from the CTI ports to give ringback to calls been transferred to agents in the call centre.
To conserve BW and have better quality MoH, Multicast MoH was configured to stream the User MoH from the routers flash instead of a G729 unicast stream across the WAN. To get Multicast MoH to work I had to change the MoH streaming codec from G729 to G711u on the CUCM. This enables the CUCM to get signal to the phones to join the Multicast stream on the SRST router when a call is placed on hold but as this is a cluster parameter it stopped the ringback MoH on the CTI ports resulting in no ringback when callers are been transferred to the agents in the contact centre. Is there any way I can get the script to play the ringback.wav file when transferring calls to agents or get the call manager to stream the ringback across the WAN while Multicast MoH is implemented?
Any help or ideas would be really appreciated