Deployment guide for Calling in Webex App (Unified CM)

Publisher

Cisco Webex

URL

https://help.webex.com/article/nj8v6wg/Deployment-guide-for-Calling-in-Webex-App-(Unified-CM)

Published

2026-02-20

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco documentation terms; no-redistribution; short excerpts and locators only

Source notes citing this source

• For Webex App visual voicemail with Unified CM, Unity Connection and Unified CM must use a matching authentication method (legacy SSO, OAuth SSO or non-SSO), and Cisco recommends matching Unity Connection and Unified CM versions. in context
• Cisco advises against using visual voicemail in Jabber and Webex App at the same time because of server performance. in context
• When Webex App calls through on-premises Unified CM, its visual voicemail inbox comes from Unity Connection, where users can play, delete, mark read and call back messages. in context
• In softphone mode Webex App registers to Unified CM as a SIP device of product type Cisco Unified Client Services Framework (CSF) on desktop, TCT or BOT on mobile, and TAB on tablets. in context
• With Unified CM calling, the Webex App registers as a SIP device of product type Cisco Unified Client Services Framework (CSF) on desktop, TCT or BOT on mobile, and TAB on tablets. These are the same softphone device types Jabber uses. in context
• Calling in Webex App (Unified CM) needs at least Unified CM 11.5(1) SU3 for desktop. Cisco recommends 12.5(1) SU3 or later. in context

Cite this source record

APA

WarmTransfer. (2026, February 20). Deployment guide for Calling in Webex App (Unified CM). WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-help-nj8v6wg-calling-webex-app-ucm

BibTeX

@misc{warmtransfer-cisco-help-nj8v6wg-calling-webex-app-ucm,
  title  = {Deployment guide for Calling in Webex App (Unified CM)},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-help-nj8v6wg-calling-webex-app-ucm},
  note   = {Cisco Webex, accessed 2026-09-24}
}