We have 2 MOH virtual servers configured to source from 2 different TFTP servers in the cluster. The MRGL for MOH on the SIP trunks for outbound, off-net calls use that MRGL which lists both MOH servers in sequence. Whenever a call used the MOH #1 , the call heard music, and was OK on HOLD. But when a call hit MOH #2, there was NO MUSIC playing, and the call on HOLD dropped within 8 seconds since the SIP SDP showed inactive RTP stream, so Verizon dropped the call. Once we directed all MOH to MOH #1, then reset the MOH server #2 and reset the MRGL list, all MOh worked again normally. There was no evidence of a problem, but looking back, I see this alert in the TFTP server syslog,
Jul 16 15:32:54.615 UTC : %CCM_MEDIA_STREAMING_APP-IPVMS-3-kMOHTFTPGoRequestFailed: Start of download request failure. File Name: Cluster ID:C4 Node ID:CLT-UCMTFTP1C4
Could this be the cause of the MOH to stop playing , and result in silence on the line ( no RTP) ? Is this a known problem in CUCM 6.1.5 version ?
I have this problem too.