Source note · SIP 488 and codec negotiation failures
Microsoft lists SILK, G.711, G.722, G.729 and AMR-WB (non-bypass only) as the codecs Direct Routing supports between Teams and the SBC, and says administrators can prioritize or restrict codecs on the SBC.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- codecs
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Plan Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · Section Supported codecs
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 488 and codec negotiation failures: source note sip-488-codec-failures-teams-dr-codecs. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-teams-dr-codecs
BibTeX
@misc{warmtransfer-claim-sip-488-codec-failures-teams-dr-codecs,
title = {SIP 488 and codec negotiation failures: source note sip-488-codec-failures-teams-dr-codecs},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-teams-dr-codecs},
note = {Source note sip-488-codec-failures-teams-dr-codecs, checked 2026-09-25}
}