Source note · Expressway and Mobile and Remote Access
ICE passthrough requires the internal leg between Expressway-C and Unified CM to be encrypted. Unified CM must be in a secure mode, either SIP OAuth or mixed mode.
Checked 2026-09-24
The internal leg between the Expressway-C and Unified CM must be encrypted
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- ice
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X12.5 and later
- Checked
- 2026-09-24
Sources
- Mobile and Remote Access Through Cisco Expressway Deployment Guide (X15.2) - ICE Media Path Optimization — Cisco Systems · tier 2 current vendor documentation · ICE Media Path Optimization chapter, limitations / prerequisites
Cite this note
APA
WarmTransfer. (2026, September 24). Expressway and Mobile and Remote Access: source note cucm-expressway-mra-ice-encrypted-leg. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-expressway-mra-ice-encrypted-leg
BibTeX
@misc{warmtransfer-claim-cucm-expressway-mra-ice-encrypted-leg,
title = {Expressway and Mobile and Remote Access: source note cucm-expressway-mra-ice-encrypted-leg},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-expressway-mra-ice-encrypted-leg},
note = {Source note cucm-expressway-mra-ice-encrypted-leg, checked 2026-09-24}
}