Source note · CUCM to Webex Calling migration
The phased architecture is described as Phase 0 with Unified CM only on premises, Phase 1 as a hybrid coexistence state with dual call control split between Unified CM and Webex Calling, and Phase 2 as fully cloud with all users on Webex Calling.
Checked 2026-09-04
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- Unified CM to Webex Calling migration
- Deployment
- hybrid-webex-calling-with-onprem-unified-cm
- Region
- not restricted
- Release range
- current as of 2026-09-04
- Checked
- 2026-09-04
Sources
- Transitioning from Unified CM to Webex Calling — Deployment Guide — Cisco Systems, Inc. (CTG TME) · tier 2 current vendor documentation · Figure 7, Phased Calling Transition: Hybrid and Cloud
Cite this note
APA
WarmTransfer. (2026, September 4). CUCM to Webex Calling migration: source note wxc-mig-architecture-phase-0-1-2. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxc-mig-architecture-phase-0-1-2
BibTeX
@misc{warmtransfer-claim-wxc-mig-architecture-phase-0-1-2,
title = {CUCM to Webex Calling migration: source note wxc-mig-architecture-phase-0-1-2},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxc-mig-architecture-phase-0-1-2},
note = {Source note wxc-mig-architecture-phase-0-1-2, checked 2026-09-04}
}