The calling party number in the SIP INVITE from the on-premises system must match an E.164 number configured in the Webex Calling route list.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- PSTN trunking for hybrid deployments
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- PSTN trunking for hybrid Webex Calling deployments — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Prerequisites
Cite this note
APA
WarmTransfer. (2026, September 24). Building a hybrid Unified CM and Webex Calling environment for a phased migration: source note cucm-webex-calling-hybrid-build-route-list-calling-num. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-route-list-calling-num
BibTeX
@misc{warmtransfer-claim-cucm-webex-calling-hybrid-build-route-list-calling-num,
title = {Building a hybrid Unified CM and Webex Calling environment for a phased migration: source note cucm-webex-calling-hybrid-build-route-list-calling-num},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-route-list-calling-num},
note = {Source note cucm-webex-calling-hybrid-build-route-list-calling-num, checked 2026-09-24}
}