Cisco states an organization may remain in the coexistence dual call control phase for an extended period of months or even years.
Checked 2026-09-24
- Vendor
- Cisco
- Product
- Unified CM
- Subsystem
- migration approach
- Deployment
- on-premises, multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Introduction (Migrate Unified CM to Webex Calling) — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Introduction > Migration approach
Cite this note
APA
WarmTransfer. (2026, September 24). Unified CM and Webex Calling coexistence during a migration: source note cucm-webex-calling-coexistence-phase-duration. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-calling-coexistence-phase-duration
BibTeX
@misc{warmtransfer-claim-cucm-webex-calling-coexistence-phase-duration,
title = {Unified CM and Webex Calling coexistence during a migration: source note cucm-webex-calling-coexistence-phase-duration},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-calling-coexistence-phase-duration},
note = {Source note cucm-webex-calling-coexistence-phase-duration, checked 2026-09-24}
}