Source note · SIP OPTIONS pings and trunk keepalives
FailoverTimeSeconds defaults to 10 seconds. An outbound call the gateway does not answer within that time is routed to the next available trunk, or dropped if there is no other trunk.
Checked 2026-09-24
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- New-CsOnlinePSTNGateway
- 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 'SBC settings', table row 'Failover times (seconds) / FailoverTimeSeconds'
Cite this note
APA
WarmTransfer. (2026, September 24). SIP OPTIONS pings and trunk keepalives: source note sip-options-keepalive-dr-failovertimeseconds. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-options-keepalive-dr-failovertimeseconds
BibTeX
@misc{warmtransfer-claim-sip-options-keepalive-dr-failovertimeseconds,
title = {SIP OPTIONS pings and trunk keepalives: source note sip-options-keepalive-dr-failovertimeseconds},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-options-keepalive-dr-failovertimeseconds},
note = {Source note sip-options-keepalive-dr-failovertimeseconds, checked 2026-09-24}
}