Source note · Troubleshooting Cisco IP phone registration
The configuration file a phone downloads from TFTP contains a prioritized list of Unified CM nodes and the TCP ports used to connect to them.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- TFTP
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 12.5(1)SU1
- Checked
- 2026-09-24
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 12.5(1)SU1 - Configure TFTP Servers — Cisco · tier 2 current vendor documentation · Configure TFTP Servers > TFTP server overview
Cite this note
APA
WarmTransfer. (2026, September 24). Troubleshooting Cisco IP phone registration: source note cisco-phone-registration-troubleshooting-cfg-contents. WarmTransfer. https://warmtransfer.net/knowledge/claims/cisco-phone-registration-troubleshooting-cfg-contents
BibTeX
@misc{warmtransfer-claim-cisco-phone-registration-troubleshooting-cfg-contents,
title = {Troubleshooting Cisco IP phone registration: source note cisco-phone-registration-troubleshooting-cfg-contents},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cisco-phone-registration-troubleshooting-cfg-contents},
note = {Source note cisco-phone-registration-troubleshooting-cfg-contents, checked 2026-09-24}
}