A UCCX CTI port shows out of service when it was dissociated from the application user or deleted in Unified CM; Cisco's fix is to restart the CCX Engine and recreate the affected call control group.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Unified Contact Center Express
- Subsystem
- CM Telephony subsystem
- Deployment
- on-premises
- Region
- not restricted
- Release range
- not stated; current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Troubleshoot CM Telephony Subsystem and Application Manager Service Partial Service Issue — Cisco Systems · tier 2 current vendor documentation · Troubleshoot CM Telephony Subsystem > Problem 3: CTI Port Out of Service
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-uccx-cti-port-oos. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-uccx-cti-port-oos
BibTeX
@misc{warmtransfer-claim-cucm-cti-troubleshooting-uccx-cti-port-oos,
title = {Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-uccx-cti-port-oos},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-uccx-cti-port-oos},
note = {Source note cucm-cti-troubleshooting-uccx-cti-port-oos, checked 2026-10-02}
}