In MRA, Expressway-E sits in the DMZ and provides secure firewall traversal. Expressway-C sits on the internal network and connects to Unified CM.

Checked 2026-09-24

Vendor
Cisco
Product
Cisco Expressway
Subsystem
mra-architecture
Deployment
on-premises, dedicated-instance
Region
not restricted
Release range
X15.2 guide; current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Expressway and Mobile and Remote Access: source note cucm-expressway-mra-e-dmz-role. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-expressway-mra-e-dmz-role

BibTeX

@misc{warmtransfer-claim-cucm-expressway-mra-e-dmz-role,
  title  = {Expressway and Mobile and Remote Access: source note cucm-expressway-mra-e-dmz-role},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-expressway-mra-e-dmz-role},
  note   = {Source note cucm-expressway-mra-e-dmz-role, checked 2026-09-24}
}

Read in context