For the case of an MTP invoked in a call leg at a multicast MoH site, the Release 15 guide's remedy is to configure unicast MoH or Tone on Hold instead of multicast MoH.
Checked 2026-09-30
To avoid this scenario, configure unicast MoH or Tone on Hold instead of multicast MoH.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- music-on-hold
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Music On Hold — Cisco Systems · tier 2 current vendor documentation · section 'Music On Hold Troubleshooting', Music On Hold Does Not Play on Phone
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-moh-mtp-multicast-remedy. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-moh-mtp-multicast-remedy
BibTeX
@misc{warmtransfer-claim-cucm-media-resource-failures-moh-mtp-multicast-remedy,
title = {Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-moh-mtp-multicast-remedy},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-moh-mtp-multicast-remedy},
note = {Source note cucm-media-resource-failures-moh-mtp-multicast-remedy, checked 2026-09-30}
}