Source note · Teams Phone Direct Routing and SBC certification
The Connect-SBC article sets a frequency limit on SBC SIP OPTIONS pings per trunk per endpoint, but its wording (no more than one every 60 seconds, and neither more nor less frequent than one every 180 seconds) is internally inconsistent.
Checked 2026-09-23
SIP OPTIONS pings MUST NOT exceed a frequency of one transaction every 60 seconds and MUST NOT be more or less frequent than one transaction every 180 seconds for each configured trunk for each endpoint.
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- sip-signaling
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-23
- Checked
- 2026-09-23
Sources
- Connect your Session Border Controller (SBC) to Direct Routing — Microsoft · tier 2 current vendor documentation · section 'Connect the SBC to the tenant' > 'Considerations', SIP OPTIONS bullet
Cite this note
APA
WarmTransfer. (2026, September 23). Teams Phone Direct Routing and SBC certification: source note teams-direct-routing-sip-options-interval. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-direct-routing-sip-options-interval
BibTeX
@misc{warmtransfer-claim-teams-direct-routing-sip-options-interval,
title = {Teams Phone Direct Routing and SBC certification: source note teams-direct-routing-sip-options-interval},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-direct-routing-sip-options-interval},
note = {Source note teams-direct-routing-sip-options-interval, checked 2026-09-23}
}