Source note · CUCM to Teams Phone migration
SIP Gateway requires outbound-only firewall openings of UDP ports 49152 to 53247 and TCP port 5061 towards IP ranges 52.112.0.0/14 and 52.122.0.0/15, the devices must not sit behind an HTTP proxy, and SIP Gateway supports IPv4 only.
Checked 2026-09-21
- Vendor
- Microsoft
- Product
- Teams SIP Gateway
- Subsystem
- endpoints
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-21
- Checked
- 2026-09-21
Sources
- Configure SIP Gateway — Microsoft · tier 2 current vendor documentation · Before you can configure SIP Gateway, do the following; and Microsoft Teams and IPv6
Cite this note
APA
WarmTransfer. (2026, September 21). CUCM to Teams Phone migration: source note cucm-to-teams-phone-sipgw-firewall-ports. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-sipgw-firewall-ports
BibTeX
@misc{warmtransfer-claim-cucm-to-teams-phone-sipgw-firewall-ports,
title = {CUCM to Teams Phone migration: source note cucm-to-teams-phone-sipgw-firewall-ports},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-sipgw-firewall-ports},
note = {Source note cucm-to-teams-phone-sipgw-firewall-ports, checked 2026-09-21}
}