Source note · Setting up CUBE for a carrier SIP trunk
When an OPTIONS-monitored dial-peer is busied out and no alternate dial-peer exists, CUBE rejects the call with 503 by default; error-code-override options-keepalive failure changes this to any code from 400 to 699, and it has no effect on an outbound dial-peer.
Checked 2026-09-25
The error code configuration will not have any effect if it is configured on the outbound dial peer.
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- SIP trunk monitoring
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Cisco IOS XE 17.6 onwards
- Checked
- 2026-09-25
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Configure an Error Response Code upon an Out-of-Dialog OPTIONS Ping Failure — Cisco Systems · tier 2 current vendor documentation · Configure an Error Response Code upon an Out-of-Dialog OPTIONS Ping Failure; configuration and restriction
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up CUBE for a carrier SIP trunk: source note cube-carrier-trunk-setup-options-error-code. WarmTransfer. https://warmtransfer.net/knowledge/claims/cube-carrier-trunk-setup-options-error-code
BibTeX
@misc{warmtransfer-claim-cube-carrier-trunk-setup-options-error-code,
title = {Setting up CUBE for a carrier SIP trunk: source note cube-carrier-trunk-setup-options-error-code},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cube-carrier-trunk-setup-options-error-code},
note = {Source note cube-carrier-trunk-setup-options-error-code, checked 2026-09-25}
}