Source note · Unified CM intercluster trunks
Several non-secure SIP trunks that point at the same destination with different listening ports can misroute mid-call INVITEs and drop calls.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- SIP trunk
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-09-25
Sources
- System Configuration Guide for Cisco Unified Communications Manager Release 15 and SUs - Configure Trunks — Cisco · tier 2 current vendor documentation · Configure Trunks > SIP trunk restrictions
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM intercluster trunks: source note cucm-intercluster-trunks-same-dest-port-mismatch. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-intercluster-trunks-same-dest-port-mismatch
BibTeX
@misc{warmtransfer-claim-cucm-intercluster-trunks-same-dest-port-mismatch,
title = {Unified CM intercluster trunks: source note cucm-intercluster-trunks-same-dest-port-mismatch},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-intercluster-trunks-same-dest-port-mismatch},
note = {Source note cucm-intercluster-trunks-same-dest-port-mismatch, checked 2026-09-25}
}