Cisco says to create a trunk and a route group for each Local Gateway and assign the route group as the location's PSTN choice, and recommends always choosing a route group so trunks can be added later for scale and redundancy.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- interconnect
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Implement the migration from Unified CM to Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Implement the migration > Integration with on-premises call control
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM and Webex Calling coexistence during a migration: source note cucm-webex-calling-coexistence-lgw-trunk-route-group. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-calling-coexistence-lgw-trunk-route-group
BibTeX
@misc{warmtransfer-claim-cucm-webex-calling-coexistence-lgw-trunk-route-group,
title = {Unified CM and Webex Calling coexistence during a migration: source note cucm-webex-calling-coexistence-lgw-trunk-route-group},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-calling-coexistence-lgw-trunk-route-group},
note = {Source note cucm-webex-calling-coexistence-lgw-trunk-route-group, checked 2026-09-24}
}