Source note · Unified CM SIP trunk to CUBE configuration
By default CUBE silently discards an inbound call that fails the IP trusted list check.
Checked 2026-09-24
By default when an inbound call does not pass the IP Trusted list check it is silently discarded
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- toll-fraud prevention
- Deployment
- on-premises
- Region
- not restricted
- Release range
- not stated; published 2023
- Checked
- 2026-09-24
Sources
- Cisco Guide to Harden Cisco Unified Border Element (CUBE) Enterprise Devices — Cisco Systems · tier 2 current vendor documentation · IP Address Trusted List section
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM SIP trunk to CUBE configuration: source note cucm-config-sip-trunk-to-cube-cube-untrusted-discard. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-config-sip-trunk-to-cube-cube-untrusted-discard
BibTeX
@misc{warmtransfer-claim-cucm-config-sip-trunk-to-cube-cube-untrusted-discard,
title = {Unified CM SIP trunk to CUBE configuration: source note cucm-config-sip-trunk-to-cube-cube-untrusted-discard},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-config-sip-trunk-to-cube-cube-untrusted-discard},
note = {Source note cucm-config-sip-trunk-to-cube-cube-untrusted-discard, checked 2026-09-24}
}