T7 · T7-R01
Webex Calling and Dedicated Instance
Learn it in 5 minutes
- Multi-tenant Webex Calling and Dedicated Instance are different offers.
- Calling locations, numbers, and features are managed in Control Hub.
- Dedicated Instance is CUCM hosted for you, with its own dial plan.
- A local gateway is a PSTN choice for Calling, not the definition of Calling.
- Confirm the offer on the subscription before you design.
Visual
What is going on
People say 'we moved to Webex' and mean four different architectures. Ask whether the phone registers to Calling, to a Dedicated Instance CUCM, or still to the old CUCM through a trunk. The ladder answers it.
Confirm before relying. Confirm offer names and feature gaps in the current Webex Calling data sheet.
Worked example
A site keeps CUCM and sends only a pilot range to Webex Calling through a local gateway. That is coexistence, not a finished migration. Draw the numbers that still live on CUCM.
Quiz
1. Dedicated Instance uses the same dial-plan objects as multi-tenant Calling.
False.
Ecosystem
Sister pieces sit on the ecosystem page: the glossary, the mind map, the integration map, and the sibling labs.
- Dedicated Instance — A hosted CUCM offer inside the Webex cloud contract.
- Control Hub — The admin place for Webex Calling locations and numbers.
Config. Write the registration target of one test phone.
Troubleshooting. If the phone still registers to the old CUCM, you have not moved that user.
Bridge. The local gateway is the usual SIP bridge during coexistence.
Mind map, sister technologies, and future hooks live on the ecosystem page.
Sources
Product screens move. Confirm the guide for your release before you change a live system.
Sources and go deeper
Opened 2026-10. A row marked confirm has no link, because that page was not verified.
- Webex. Get started with Webex Calling last checked 2026-10
- Webex. Webex Help Center last checked 2026-10
- Cisco. Cisco Unified Communications Manager product support last checked 2026-10
- Cisco. Cisco Collaboration Preferred Architectures last checked 2026-10
- Community. Cisco Community, Collaboration knowledge base last checked 2026-10
- Wikipedia. Voice over IP (Wikipedia) last checked 2026-10