Source note · CUCM to Teams Phone migration
For Local Media Optimization the -MediaBypass parameter must be set to $true, and if the SBC does not have the -BypassMode parameter set then X-MS headers will not be sent.
Checked 2026-09-16
The -MediaBypass parameter must be set to $true in order to support Local Media Optimization.
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- Local Media Optimization
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-16
- Checked
- 2026-09-16
Sources
- Configure Local Media Optimization for Direct Routing — Microsoft · tier 2 current vendor documentation · Define the virtual network topology > notes on the Set-CsOnlinePSTNGateway parameters
Cite this note
APA
WarmTransfer. (2026, September 16). CUCM to Teams Phone migration: source note cucm-to-teams-phone-lmo-requires-media-bypass. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-lmo-requires-media-bypass
BibTeX
@misc{warmtransfer-claim-cucm-to-teams-phone-lmo-requires-media-bypass,
title = {CUCM to Teams Phone migration: source note cucm-to-teams-phone-lmo-requires-media-bypass},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-lmo-requires-media-bypass},
note = {Source note cucm-to-teams-phone-lmo-requires-media-bypass, checked 2026-09-16}
}