Microsoft Teams Direct Routing signalling is SIP over TLS, with the SBC connecting to the Microsoft SIP proxy on port 5061; no UDP signalling option is listed.
Checked 2026-10-02
- Vendor
- Microsoft
- Product
- Microsoft Teams Direct Routing
- Subsystem
- SIP signalling
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Plan Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · SIP signaling ports table
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting failed calls caused by large SIP messages over UDP: source note sip-fragmentation-troubleshooting-teams-dr-sip-tls-5061. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-fragmentation-troubleshooting-teams-dr-sip-tls-5061
BibTeX
@misc{warmtransfer-claim-sip-fragmentation-troubleshooting-teams-dr-sip-tls-5061,
title = {Troubleshooting failed calls caused by large SIP messages over UDP: source note sip-fragmentation-troubleshooting-teams-dr-sip-tls-5061},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-fragmentation-troubleshooting-teams-dr-sip-tls-5061},
note = {Source note sip-fragmentation-troubleshooting-teams-dr-sip-tls-5061, checked 2026-10-02}
}