Unified CM uses SIP route patterns to send calls for external domains to the Expressway-C trunk; Cisco's technote defers the exact pattern design to the Unified CM dial plan documentation.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified CM
- Subsystem
- SIP route patterns
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unified CM 10.0 or later
- Checked
- 2026-09-25
Sources
- Configure Business to Business Audio/Video Calls through Expressway — Cisco Systems · tier 2 current vendor documentation · Configure > CUCM > SIP Route Pattern
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-cucm-sip-route-pattern. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-cucm-sip-route-pattern
BibTeX
@misc{warmtransfer-claim-expressway-b2b-setup-cucm-sip-route-pattern,
title = {Setting up business-to-business calling on Cisco Expressway: source note expressway-b2b-setup-cucm-sip-route-pattern},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-setup-cucm-sip-route-pattern},
note = {Source note expressway-b2b-setup-cucm-sip-route-pattern, checked 2026-09-25}
}