Source note · SIP trunk redundancy and failover design
The default FailoverResponseCodes on a Teams online PSTN gateway are 408, 503 and 504, and setting the parameter overwrites the defaults rather than adding to them.
Checked 2026-09-25
Setting this parameter overwrites the default values, so if you want to include the default values, please add them to string.
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- online PSTN gateway
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- MicrosoftTeams PowerShell module, current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Set-CsOnlinePSTNGateway (MicrosoftTeams) — Microsoft · tier 2 current vendor documentation · Parameters, -FailoverResponseCodes
Cite this note
APA
WarmTransfer. (2026, September 25). SIP trunk redundancy and failover design: source note sip-trunk-redundancy-design-ms-failover-codes. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-redundancy-design-ms-failover-codes
BibTeX
@misc{warmtransfer-claim-sip-trunk-redundancy-design-ms-failover-codes,
title = {SIP trunk redundancy and failover design: source note sip-trunk-redundancy-design-ms-failover-codes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-redundancy-design-ms-failover-codes},
note = {Source note sip-trunk-redundancy-design-ms-failover-codes, checked 2026-09-25}
}