Source note · Troubleshooting Cisco IP phone registration
For unregistration issues Cisco TAC lists the phone's Problem Report Tool (PRT) or console logs from the phone, and CallManager traces, event viewer logs and TFTP logs from Unified CM, as the data to collect.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- diagnostics
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Troubleshoot IP Phone Unregistration Issues in CUCM — Cisco · tier 2 current vendor documentation · Troubleshoot IP Phone Unregistration Issues in CUCM > Logs to collect
Cite this note
APA
WarmTransfer. (2026, September 24). Troubleshooting Cisco IP phone registration: source note cisco-phone-registration-troubleshooting-logs-collect. WarmTransfer. https://warmtransfer.net/knowledge/claims/cisco-phone-registration-troubleshooting-logs-collect
BibTeX
@misc{warmtransfer-claim-cisco-phone-registration-troubleshooting-logs-collect,
title = {Troubleshooting Cisco IP phone registration: source note cisco-phone-registration-troubleshooting-logs-collect},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cisco-phone-registration-troubleshooting-logs-collect},
note = {Source note cisco-phone-registration-troubleshooting-logs-collect, checked 2026-09-24}
}