Source note · Teams Phone Direct Routing and SBC certification
Direct Routing doesn't support Delayed Offer INVITEs (INVITE without SDP) and doesn't support SIPS URIs.
Checked 2026-09-23
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- sip-signaling
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-23
- Checked
- 2026-09-23
Sources
- Teams Phone System Direct Routing: SIP protocol — Microsoft · tier 2 current vendor documentation · Note in 'Non-media bypass flow' (Delayed Offer) and Note under the OPTIONS example table (SIPS)
Cite this note
APA
WarmTransfer. (2026, September 23). Teams Phone Direct Routing and SBC certification: source note teams-direct-routing-no-delayed-offer-sips. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-direct-routing-no-delayed-offer-sips
BibTeX
@misc{warmtransfer-claim-teams-direct-routing-no-delayed-offer-sips,
title = {Teams Phone Direct Routing and SBC certification: source note teams-direct-routing-no-delayed-offer-sips},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-direct-routing-no-delayed-offer-sips},
note = {Source note teams-direct-routing-no-delayed-offer-sips, checked 2026-09-23}
}