Configuration > Protocols > Interworking offers H.323 <-> SIP interworking modes Off, Registered only (default; gateway only if at least one endpoint is locally registered) and On (gateway regardless of registration).
Checked 2026-09-25
The Expressway acts as a SIP–H.323 gateway regardless of whether the endpoints are locally registered.
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- interworking
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X15.4 to X15.5
- Checked
- 2026-09-25
Sources
- Cisco Expressway Administrator Guide (X15.5) - Protocols — Cisco · tier 2 current vendor documentation · Protocols > Interworking
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-interworking-modes. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-interworking-modes
BibTeX
@misc{warmtransfer-claim-expressway-b2b-setup-interworking-modes,
title = {Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-interworking-modes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-interworking-modes},
note = {Source note expressway-b2b-setup-interworking-modes, checked 2026-09-25}
}