Multicast Music On Hold supports only IPv4, its audio streams are not encrypted and do not support SRTP, and CTI and MTP devices do not support it.
Checked 2026-09-30
- 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 Restrictions'
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-moh-multicast-limits. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-moh-multicast-limits
BibTeX
@misc{warmtransfer-claim-cucm-media-resource-failures-moh-multicast-limits,
title = {Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-moh-multicast-limits},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-moh-multicast-limits},
note = {Source note cucm-media-resource-failures-moh-multicast-limits, checked 2026-09-30}
}