Refer to exhibit. An administrator is troubleshooting failures with Jabber logins over Mobile and Remote Access. The Cisco UCM server added to the Expressway-C is not configured to issue self-describing authorization tokens to Mobile and Remote Access clients. Which configuration change must be made on the Expressway-C to resolve the login failures?

Which step is required when configuring cloud and hybrid deployments for Cisco Jabber?

Refer to the exhibit. After security policy updates, users in your organization report they cannot add external participants to newly created Webex App spaces but can still communicate with external users in older group spaces.
Investigation shows:
- External communication was recently restricted using "Allow selected domains only" in Control Hub.
- The allow list for domains is currently empty.
- No user groups are exempted from the restriction policy.
- Existing spaces that included internal and external members before the restriction still function normally.
What is the explanation for this behavior?

Refer to the exhibit. Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway.
An H.323 endpoint with an alias of "EndpointA" is registered, and a SIP endpoint with an alias of
"[email protected]" is also registered. How is this issue resolved?

A collaboration engineer is configuring Cisco Webex Edge for video conferencing devices to provide support for Cisco Webex Control Hub configuration management. Which configuration control mode must be set on Cisco UCM for Control Hub to manage the on-premises device configuration?