During coexistence, users still on Unified CM keep whatever emergency routing Unified CM already gives them unless their numbers are placed on a Webex Calling route list, so a phased migration runs two emergency-calling paths that each need their own testing.
inferred · Checked 2026-09-24
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- emergency calling
- Deployment
- multi-tenant, on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Status
- inferred
- Checked
- 2026-09-24
Sources
- PSTN trunking for hybrid Webex Calling deployments — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Emergency calls; How it works
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-split-e911-paths. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-split-e911-paths
BibTeX
@misc{warmtransfer-claim-cucm-webex-calling-hybrid-build-split-e911-paths,
title = {Building a hybrid Unified CM and Webex Calling environment for a phased migration: source note cucm-webex-calling-hybrid-build-split-e911-paths},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-split-e911-paths},
note = {Source note cucm-webex-calling-hybrid-build-split-e911-paths, checked 2026-09-24}
}