Source note · Setting up the Webex App for Unified CM calling
Because Webex App gives users no option to accept an untrusted certificate, a Unified CM or Expressway certificate the endpoint OS does not already trust is likely to stop phone-services sign-in rather than prompt the user.
inferred · Checked 2026-09-30
- Vendor
- Cisco
- Product
- Webex App
- Subsystem
- certificates
- Deployment
- on-premises, hybrid
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Status
- inferred
- Checked
- 2026-09-30
Sources
- Deployment guide for Calling in Webex App (Unified CM) - Prepare your environment for Calling in Webex App (Unified CM) — Cisco Systems · tier 2 current vendor documentation · Prepare your environment > Certificate requirements
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up the Webex App for Unified CM calling: source note cucm-webex-app-calling-setup-inf-selfsigned-fails. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-webex-app-calling-setup-inf-selfsigned-fails
BibTeX
@misc{warmtransfer-claim-cucm-webex-app-calling-setup-inf-selfsigned-fails,
title = {Setting up the Webex App for Unified CM calling: source note cucm-webex-app-calling-setup-inf-selfsigned-fails},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-webex-app-calling-setup-inf-selfsigned-fails},
note = {Source note cucm-webex-app-calling-setup-inf-selfsigned-fails, checked 2026-09-30}
}