Source note · CUCM to Teams Phone migration
Phone numbers can be configured with extensions so several users share one base number, and for the lookup to succeed the INVITE must contain the full number with the extension, for example sip:+14255388701;ext=1001.
Checked 2026-09-21
- Vendor
- Microsoft
- Product
- Teams Phone
- Subsystem
- user-enablement
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-21
- Checked
- 2026-09-21
Sources
- Enable users for Direct Routing — Microsoft · tier 2 current vendor documentation · Configure the phone number and enable enterprise voice > Use PowerShell, paragraph after the extension examples
Cite this note
APA
WarmTransfer. (2026, September 21). CUCM to Teams Phone migration: source note cucm-to-teams-phone-users-extension-lookup. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-users-extension-lookup
BibTeX
@misc{warmtransfer-claim-cucm-to-teams-phone-users-extension-lookup,
title = {CUCM to Teams Phone migration: source note cucm-to-teams-phone-users-extension-lookup},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-users-extension-lookup},
note = {Source note cucm-to-teams-phone-users-extension-lookup, checked 2026-09-21}
}