When a Unified CM call-processing node fails, CTIManager recovers the affected CTI ports and route points by reopening them on another Unified CM node.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- CTI redundancy
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-10-02
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Configure CTI Applications — Cisco Systems · tier 2 current vendor documentation · Configure CTI Applications > CTI Redundancy > Unified Communications Manager failure
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-redundancy-node-failure. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-redundancy-node-failure
BibTeX
@misc{warmtransfer-claim-cucm-cti-troubleshooting-redundancy-node-failure,
title = {Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-redundancy-node-failure},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-redundancy-node-failure},
note = {Source note cucm-cti-troubleshooting-redundancy-node-failure, checked 2026-10-02}
}