Source note · SIP trunk redundancy and failover design
In Unified CM 8.6(1) SIP OPTIONS Ping, a trunk destination is out of service if it does not respond to OPTIONS, returns 503 or 408, or a TCP connection cannot be established.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- SIP trunk OPTIONS ping
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 8.6(1)
- Checked
- 2026-09-25
Sources
- Cisco Unified Communications Manager Trunks (Session Management Edition deployment guide 8.6(1)) — Cisco · tier 2 current vendor documentation · SIP OPTIONS Ping section
Cite this note
APA
WarmTransfer. (2026, September 25). SIP trunk redundancy and failover design: source note sip-trunk-redundancy-design-cucm-oos-conditions. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-redundancy-design-cucm-oos-conditions
BibTeX
@misc{warmtransfer-claim-sip-trunk-redundancy-design-cucm-oos-conditions,
title = {SIP trunk redundancy and failover design: source note sip-trunk-redundancy-design-cucm-oos-conditions},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-redundancy-design-cucm-oos-conditions},
note = {Source note sip-trunk-redundancy-design-cucm-oos-conditions, checked 2026-09-25}
}