Source note · SIP trunk capacity and concurrent call planning
In Teams Direct Routing, the MaxConcurrentSessions setting on an SBC (PSTN gateway) is used by the alerting system, which alerts the tenant administrator when concurrent sessions reach 90% or more of the configured value.
Checked 2026-09-24
When any value is set, the alerting system will generate an alert to the tenant administrator when the number of concurrent sessions is 90% or higher than this value.
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- SBC configuration
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- New-CsOnlinePSTNGateway (MicrosoftTeams) — Microsoft Learn · tier 2 current vendor documentation · Parameters, '-MaxConcurrentSessions'
Cite this note
APA
WarmTransfer. (2026, September 24). SIP trunk capacity and concurrent call planning: source note sip-trunk-capacity-planning-ms-maxsessions-alerting. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-capacity-planning-ms-maxsessions-alerting
BibTeX
@misc{warmtransfer-claim-sip-trunk-capacity-planning-ms-maxsessions-alerting,
title = {SIP trunk capacity and concurrent call planning: source note sip-trunk-capacity-planning-ms-maxsessions-alerting},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-capacity-planning-ms-maxsessions-alerting},
note = {Source note sip-trunk-capacity-planning-ms-maxsessions-alerting, checked 2026-09-24}
}