Source note · Expressway business-to-business calling
Cisco's Collaboration 14 Preferred Architecture recommends CPL rules to allow or reject calls from the Default Zone in B2B deployments, for example rejecting inbound B2B calls to 9-prefixed destinations to block unauthorised PSTN calls.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- call policy
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Collaboration System Release 14 design
- Checked
- 2026-09-25
Sources
- Preferred Architecture for Cisco Collaboration 14 Enterprise On-Premises Deployments, CVD - Security — Cisco Systems · tier 2 current vendor documentation · Toll Fraud Mitigation > Cisco Expressway
Cite this note
APA
WarmTransfer. (2026, September 25). Expressway business-to-business calling: source note expressway-b2b-calling-cvd-cpl-default-zone. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-b2b-calling-cvd-cpl-default-zone
BibTeX
@misc{warmtransfer-claim-expressway-b2b-calling-cvd-cpl-default-zone,
title = {Expressway business-to-business calling: source note expressway-b2b-calling-cvd-cpl-default-zone},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-b2b-calling-cvd-cpl-default-zone},
note = {Source note expressway-b2b-calling-cvd-cpl-default-zone, checked 2026-09-25}
}