In bypass mode the SBC must support SRTP cipher AES_CM_128_HMAC_SHA1_80, and its SDP offer must contain SDES (DTLS optional); if a client is DTLS-only, Direct Routing inserts a Media Processor and converts the call to non-bypass.
Checked 2026-09-30
- Vendor
- Microsoft
- Product
- Microsoft Teams Phone Direct Routing
- Subsystem
- SBC media security
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Direct Routing support for media bypass - Microsoft Teams — Microsoft Learn · tier 2 current vendor documentation · SRTP support requirements; SDES support requirements; Format for offer from SBC in bypass mode
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-srtp-sdes. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-media-bypass-setup-srtp-sdes
BibTeX
@misc{warmtransfer-claim-teams-media-bypass-setup-srtp-sdes,
title = {Setting up media bypass and local media optimization for Teams Direct Routing: source note teams-media-bypass-setup-srtp-sdes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-media-bypass-setup-srtp-sdes},
note = {Source note teams-media-bypass-setup-srtp-sdes, checked 2026-09-30}
}