Source note · Unified CM call admission control
In Release 15, AAR reroutes calls through the PSTN or other networks when the system blocks a call for insufficient location bandwidth, so the caller does not have to hang up and redial.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- Automated Alternate Routing
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-09-25
Sources
- System Configuration Guide for Cisco Unified Communications Manager Release 15 and SUs - Configure Call Routing — Cisco · tier 2 current vendor documentation · Configure Call Routing; Automated Alternate Routing overview
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM call admission control: source note cucm-call-admission-control-aar-trigger-r15. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-call-admission-control-aar-trigger-r15
BibTeX
@misc{warmtransfer-claim-cucm-call-admission-control-aar-trigger-r15,
title = {Unified CM call admission control: source note cucm-call-admission-control-aar-trigger-r15},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-call-admission-control-aar-trigger-r15},
note = {Source note cucm-call-admission-control-aar-trigger-r15, checked 2026-09-25}
}