Source note · SIP 503 and trunk out-of-service failures
In the DNS SRV case, Cisco's CUBE guide says CUBE monitors all destinations irrespective of the response it receives, naming 503 and 200 OK as examples.
Checked 2026-09-25
CUBE monitors all the destinations irrespective of the response (503, 200 OK, and so on) that it receives.
- Vendor
- Cisco
- Product
- CUBE
- 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 chapter, subsection 'OPTIONS Ping for DNS SRV Hosts'
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 503 and trunk out-of-service failures: source note sip-503-trunk-failures-cube-srv-any-response. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-503-trunk-failures-cube-srv-any-response
BibTeX
@misc{warmtransfer-claim-sip-503-trunk-failures-cube-srv-any-response,
title = {SIP 503 and trunk out-of-service failures: source note sip-503-trunk-failures-cube-srv-any-response},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-503-trunk-failures-cube-srv-any-response},
note = {Source note sip-503-trunk-failures-cube-srv-any-response, checked 2026-09-25}
}