For coexistence the Unified CM dial plan must support +E.164 dialing, extension dialing (intra-site and inter-site), abbreviated inter-site dialing and forced on-net dialing to Webex Calling.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Unified CM
- Subsystem
- dial plan
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Design to migrate from Unified CM to Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Dial plan section, Unified CM dial plan changes
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-ucm-dialing-needs. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-ucm-dialing-needs
BibTeX
@misc{warmtransfer-claim-cucm-webex-calling-hybrid-build-ucm-dialing-needs,
title = {Building a hybrid Unified CM and Webex Calling environment for a phased migration: source note cucm-webex-calling-hybrid-build-ucm-dialing-needs},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-calling-hybrid-build-ucm-dialing-needs},
note = {Source note cucm-webex-calling-hybrid-build-ucm-dialing-needs, checked 2026-09-24}
}