Source note · SRTP and media encryption negotiation
In Direct Routing bypass mode, the SBC's offer must contain SDES (a=crypto) and may also carry DTLS attributes (a=fingerprint, a=setup:actpass). Microsoft's example uses UDP/TLS/RTP/SAVP with rtcp-mux.
Checked 2026-09-23
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- media bypass
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-23
- Checked
- 2026-09-23
Sources
- Direct Routing support for media bypass - Microsoft Teams — Microsoft Learn · tier 2 current vendor documentation · Section 'Format for offer from SBC in bypass mode'
Cite this note
APA
WarmTransfer. (2026, September 23). SRTP and media encryption negotiation: source note srtp-media-security-teams-dr-bypass-offer-format. WarmTransfer. https://warmtransfer.net/knowledge/claims/srtp-media-security-teams-dr-bypass-offer-format
BibTeX
@misc{warmtransfer-claim-srtp-media-security-teams-dr-bypass-offer-format,
title = {SRTP and media encryption negotiation: source note srtp-media-security-teams-dr-bypass-offer-format},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srtp-media-security-teams-dr-bypass-offer-format},
note = {Source note srtp-media-security-teams-dr-bypass-offer-format, checked 2026-09-23}
}