Source note · Expressway business-to-business calling
In a B2B deployment Expressway-C is the traversal client and Expressway-E is the traversal server.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- firewall traversal
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X8.1.1 and later
- Checked
- 2026-09-25
Sources
- Configure Business to Business Audio/Video Calls through Expressway — Cisco Systems · tier 2 current vendor documentation · Configure: traversal zone on Expressway-C and Expressway-E
Cite this note
APA
WarmTransfer. (2026, September 25). Expressway business-to-business calling: source note expressway-b2b-calling-traversal-roles. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-calling-traversal-roles
BibTeX
@misc{warmtransfer-claim-expressway-b2b-calling-traversal-roles,
title = {Expressway business-to-business calling: source note expressway-b2b-calling-traversal-roles},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-calling-traversal-roles},
note = {Source note expressway-b2b-calling-traversal-roles, checked 2026-09-25}
}