The software conference bridge supports at most 256 callers, which the Release 15 guide illustrates as 64 conference sessions of 4 parties each.
Checked 2026-09-30
The maximum number of callers for this type equals 256.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- conference-bridge
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs as of 2026-09-30
- Checked
- 2026-09-30
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Configure Conference Bridges — Cisco Systems · tier 2 current vendor documentation · section 'Conference Bridge Types', software conference bridge
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-sw-cfb-256-callers. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-sw-cfb-256-callers
BibTeX
@misc{warmtransfer-claim-cucm-media-resource-failures-sw-cfb-256-callers,
title = {Troubleshooting Unified CM media resource allocation failures: source note cucm-media-resource-failures-sw-cfb-256-callers},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-media-resource-failures-sw-cfb-256-callers},
note = {Source note cucm-media-resource-failures-sw-cfb-256-callers, checked 2026-09-30}
}