Source note · SIP OPTIONS pings and trunk keepalives
To validate pairing, check on the SBC that its outgoing OPTIONS receive 200 OK, and that it answers the OPTIONS arriving from Direct Routing with 200 OK.
Checked 2026-09-24
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- SBC pairing
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Connect your Session Border Controller (SBC) to Direct Routing — Microsoft · tier 2 current vendor documentation · section 'Verify the SBC connection' > 'Validate SIP options'
Cite this note
APA
WarmTransfer. (2026, September 24). SIP OPTIONS pings and trunk keepalives: source note sip-options-keepalive-dr-validate-both-directions. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-options-keepalive-dr-validate-both-directions
BibTeX
@misc{warmtransfer-claim-sip-options-keepalive-dr-validate-both-directions,
title = {SIP OPTIONS pings and trunk keepalives: source note sip-options-keepalive-dr-validate-both-directions},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-options-keepalive-dr-validate-both-directions},
note = {Source note sip-options-keepalive-dr-validate-both-directions, checked 2026-09-24}
}