Source note · Unified CM call admission control

AAR is invoked only when Enhanced Locations CAC denies a call for lack of bandwidth along the effective path.

Checked 2026-09-25

AAR is invoked only when Enhanced Locations Call Admission Control denies the call due to a lack of network bandwidth along the effective path.

Vendor: Cisco
Product: Unified Communications Manager
Subsystem: Automated Alternate Routing
Deployment: on-premises
Region: not restricted
Release range: Collaboration 14 preferred architecture
Checked: 2026-09-25

Sources

Preferred Architecture for Cisco Collaboration 14 Enterprise On-Premises Deployments, CVD - Bandwidth Management — Cisco · tier 2 current vendor documentation · Bandwidth Management Deployment (Automated Alternate Routing)

Cite this note

APA

WarmTransfer. (2026, September 25). Unified CM call admission control: source note cucm-call-admission-control-aar-only-on-cac. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-call-admission-control-aar-only-on-cac

BibTeX

@misc{warmtransfer-claim-cucm-call-admission-control-aar-only-on-cac,
  title  = {Unified CM call admission control: source note cucm-call-admission-control-aar-only-on-cac},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-call-admission-control-aar-only-on-cac},
  note   = {Source note cucm-call-admission-control-aar-only-on-cac, checked 2026-09-25}
}

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