For UCCX, the IPCC extension must be on one of the first four lines of the phone or user device profile because JTAPI monitors only the first four configured lines.
Checked 2026-10-02
JTAPI monitors the first four configured lines on the phone or the UDP
- Vendor
- Cisco
- Product
- Unified Contact Center Express
- Subsystem
- Agent login
- Deployment
- on-premises
- Region
- not restricted
- Release range
- not stated; current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Troubleshoot Agent Log in Issues — Cisco Systems (TAC technote) · tier 2 current vendor documentation · Troubleshoot Agent Log in Issues > Step 5
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-uccx-first-four-lines. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-uccx-first-four-lines
BibTeX
@misc{warmtransfer-claim-cucm-cti-troubleshooting-uccx-first-four-lines,
title = {Troubleshooting CTI applications that cannot control phones in Unified CM: source note cucm-cti-troubleshooting-uccx-first-four-lines},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-cti-troubleshooting-uccx-first-four-lines},
note = {Source note cucm-cti-troubleshooting-uccx-first-four-lines, checked 2026-10-02}
}