Source note · Setting up Extension Mobility in Unified CM
A login attempt fails with error 22 (Dev Logon Disabled) when the Enable Extension Mobility check box is not checked in the Phone Configuration window (Device > Phone) for that phone.
Checked 2026-09-30
Verify that you checked the Enable Extension Mobility check box in the Phone Configuration window (Device > Phone).
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- Extension Mobility
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-09-30
Sources
- Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Extension Mobility — Cisco Systems · tier 2 current vendor documentation · Extension Mobility Troubleshooting, Error 22 Dev Logon Disabled
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up Extension Mobility in Unified CM: source note cucm-extension-mobility-setup-enable-em-checkbox. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-extension-mobility-setup-enable-em-checkbox
BibTeX
@misc{warmtransfer-claim-cucm-extension-mobility-setup-enable-em-checkbox,
title = {Setting up Extension Mobility in Unified CM: source note cucm-extension-mobility-setup-enable-em-checkbox},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-extension-mobility-setup-enable-em-checkbox},
note = {Source note cucm-extension-mobility-setup-enable-em-checkbox, checked 2026-09-30}
}