Source note · Unified CM SIP trunks and security profiles
Inference: the documented LGW coexistence design (two non-secure trunks with different listening ports to one LGW at 5060) matches the conditions of the Release 15 restriction on mid-call INVITE port use. Whether that design is exposed to the call-drop behaviour is not established by any source retrieved.
inferred · Checked 2026-09-24
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- SIP trunk restrictions
- Deployment
- hybrid
- Region
- not restricted
- Release range
- Release 15 and SUs
- Status
- inferred
- Checked
- 2026-09-24
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 > Multiple Non-secure SIP Trunks to Same Destination, read with cisco-help-jr1i3r-configure-lgw-ios-xe
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM SIP trunks and security profiles: source note cucm-sip-trunks-inf-lgw-restriction-exposure. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-sip-trunks-inf-lgw-restriction-exposure
BibTeX
@misc{warmtransfer-claim-cucm-sip-trunks-inf-lgw-restriction-exposure,
title = {Unified CM SIP trunks and security profiles: source note cucm-sip-trunks-inf-lgw-restriction-exposure},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-sip-trunks-inf-lgw-restriction-exposure},
note = {Source note cucm-sip-trunks-inf-lgw-restriction-exposure, checked 2026-09-24}
}