Source note · Teams Phone Direct Routing and SBC certification
With media bypass, Teams clients send media to the SBC's public IP from UDP source ports 50000–50019. Transport Relays use 50000–59999 (v4 relays) and 3478–3481 (v6 relays) toward the SBC.
Checked 2026-09-23
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- media-bypass
- Deployment
- multi-tenant, gcc-high, dod
- Region
- not restricted
- Release range
- current as of 2026-09-23
- Checked
- 2026-09-23
Sources
- Plan for media bypass with Direct Routing — Microsoft · tier 2 current vendor documentation · sections 'Requirements for direct media traffic' and 'Requirements for using Transport Relays' tables and Note
Cite this note
APA
WarmTransfer. (2026, September 23). Teams Phone Direct Routing and SBC certification: source note teams-direct-routing-bypass-ports. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-direct-routing-bypass-ports
BibTeX
@misc{warmtransfer-claim-teams-direct-routing-bypass-ports,
title = {Teams Phone Direct Routing and SBC certification: source note teams-direct-routing-bypass-ports},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-direct-routing-bypass-ports},
note = {Source note teams-direct-routing-bypass-ports, checked 2026-09-23}
}