Source note · SIP 488 and codec negotiation failures
Media Processors are always in the media path for Teams voice applications such as Call Park, Auto Attendant and Call Queues, and for web clients, even on media-bypass trunks.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- media bypass
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Plan for media bypass with Direct Routing — Microsoft · tier 2 current vendor documentation · Sections Use of Media Processors and Transport Relays; Requirements for using media processors
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 488 and codec negotiation failures: source note sip-488-codec-failures-teams-mp-voice-apps. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-teams-mp-voice-apps
BibTeX
@misc{warmtransfer-claim-sip-488-codec-failures-teams-mp-voice-apps,
title = {SIP 488 and codec negotiation failures: source note sip-488-codec-failures-teams-mp-voice-apps},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-teams-mp-voice-apps},
note = {Source note sip-488-codec-failures-teams-mp-voice-apps, checked 2026-09-25}
}