For bypassed calls relayed by Teams Transport Relays, the SBC must allow UDP/SRTP from relays on source ports 50000-59999 and send to relays on 50000-59999 and 3478-3481, because relay version v4 uses only 50000-59999 and v6 uses 3478-3481.
Checked 2026-09-30
- Vendor
- Microsoft
- Product
- Microsoft Teams Phone Direct Routing
- Subsystem
- firewall
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Plan for media bypass with Direct Routing — Microsoft · tier 2 current vendor documentation · Requirements for using Transport Relays, port table and Note
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up media bypass and local media optimization for Teams Direct Routing: source note teams-media-bypass-setup-mb-relay-ports. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-media-bypass-setup-mb-relay-ports
BibTeX
@misc{warmtransfer-claim-teams-media-bypass-setup-mb-relay-ports,
title = {Setting up media bypass and local media optimization for Teams Direct Routing: source note teams-media-bypass-setup-mb-relay-ports},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-media-bypass-setup-mb-relay-ports},
note = {Source note teams-media-bypass-setup-mb-relay-ports, checked 2026-09-30}
}