Source note · SIP trunk redundancy and failover design
CUBE out-of-dialog OPTIONS ping can mark a SIP dial peer busyout on heartbeat failure, and a dial peer is busied out only when all of its destinations fail to respond.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- SIP trunk monitoring
- Deployment
- on-premises
- Region
- not restricted
- Release range
- IOS XE 17.6 onwards
- Checked
- 2026-09-25
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - SIP Trunk Monitoring — Cisco · tier 2 current vendor documentation · SIP Trunk Monitoring, OOD OPTIONS ping overview and server-group behaviour
Cite this note
APA
WarmTransfer. (2026, September 25). SIP trunk redundancy and failover design: source note sip-trunk-redundancy-design-cube-busyout. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-redundancy-design-cube-busyout
BibTeX
@misc{warmtransfer-claim-sip-trunk-redundancy-design-cube-busyout,
title = {SIP trunk redundancy and failover design: source note sip-trunk-redundancy-design-cube-busyout},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-redundancy-design-cube-busyout},
note = {Source note sip-trunk-redundancy-design-cube-busyout, checked 2026-09-25}
}