In Cisco's CUCM-to-CUBE example, CUBE is configured with voice-class sip options-keepalive on the dial-peer so that OPTIONS are exchanged in both directions.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- options-keepalive
- Deployment
- on-premises
- Region
- not restricted
- Release range
- technote updated 2019-02-06
- Checked
- 2026-10-02
Sources
- Configure Options Ping Between CUCM and CUBE — Cisco · tier 2 current vendor documentation · Configure > CUBE configuration
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unified CM SIP trunks that show No Service: source note cucm-sip-trunk-no-service-troubleshooting-cube-keepalive-cmd. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-sip-trunk-no-service-troubleshooting-cube-keepalive-cmd
BibTeX
@misc{warmtransfer-claim-cucm-sip-trunk-no-service-troubleshooting-cube-keepalive-cmd,
title = {Troubleshooting Unified CM SIP trunks that show No Service: source note cucm-sip-trunk-no-service-troubleshooting-cube-keepalive-cmd},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-sip-trunk-no-service-troubleshooting-cube-keepalive-cmd},
note = {Source note cucm-sip-trunk-no-service-troubleshooting-cube-keepalive-cmd, checked 2026-10-02}
}