What feature enables Jabber/Webex app registration?

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Multiple Choice

What feature enables Jabber/Webex app registration?

Explanation:
Mobile and Remote Access enables Jabber and Webex apps to register to the on‑premises Cisco Unified Communications infrastructure from outside the corporate network. It uses the Expressway border elements to traverse NAT/firewalls and create a secure path for signaling and media, letting users register with CUCM/IM&P even when not connected to VPN. The other options relate to authentication or presence, but don’t enable the remote registration flow by themselves.

Mobile and Remote Access enables Jabber and Webex apps to register to the on‑premises Cisco Unified Communications infrastructure from outside the corporate network. It uses the Expressway border elements to traverse NAT/firewalls and create a secure path for signaling and media, letting users register with CUCM/IM&P even when not connected to VPN. The other options relate to authentication or presence, but don’t enable the remote registration flow by themselves.

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