Source note · SIP early offer and delayed offer
Microsoft Teams Direct Routing does not support Delayed Offer INVITEs (INVITE without SDP).
Checked 2026-09-25
Direct Routing doesn't support Delayed Offer Invite (Invite without SDP).
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- sip-proxy
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Teams Phone System Direct Routing: SIP protocol — Microsoft · tier 2 current vendor documentation · Inbound call: SIP dialog description > Non-media bypass flow > note under 'Call accepted'
Cite this note
APA
WarmTransfer. (2026, September 25). SIP early offer and delayed offer: source note sip-early-delayed-offer-teams-dr-no-delayed-offer. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-early-delayed-offer-teams-dr-no-delayed-offer
BibTeX
@misc{warmtransfer-claim-sip-early-delayed-offer-teams-dr-no-delayed-offer,
title = {SIP early offer and delayed offer: source note sip-early-delayed-offer-teams-dr-no-delayed-offer},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-early-delayed-offer-teams-dr-no-delayed-offer},
note = {Source note sip-early-delayed-offer-teams-dr-no-delayed-offer, checked 2026-09-25}
}