In the Unified CM 8.x design guide, the User Hold MoH Audio Source configured for the holder determines the audio file streamed, while the holdee's media resource group list determines the server the stream comes from.

Checked 2026-09-30

The User Hold MoH Audio Source configured for the holder determines the audio file that will be streamed when the holder puts a call on hold, and the holdee's configured MRGL indicates the resource or server from which the holdee will receive the MoH stream.
Vendor
Cisco
Product
Unified Communications Manager
Subsystem
music-on-hold
Deployment
on-premises
Region
not restricted
Release range
Unified CM 8.x; not confirmed in Release 15 text for the audio-source half
Checked
2026-09-30

Sources

Cite this note

APA

WarmTransfer. (2026, September 30). Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-moh-holder-audio-source. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-moh-holder-audio-source

BibTeX

@misc{warmtransfer-claim-cucm-media-resource-failures-moh-holder-audio-source,
  title  = {Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-moh-holder-audio-source},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-moh-holder-audio-source},
  note   = {Source note cucm-media-resource-failures-moh-holder-audio-source, checked 2026-09-30}
}

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