Which two components coordinate to validate MRA credentials in a deployment?

Which two components coordinate to validate MRA credentials in a deployment?

• A. Expressway-C and CUCM
• B. Expressway-E and CUCM
• C. CUCM and IM&P
• D. MRA server and AD

Answer: (A)

In Mobility and Remote Access, the remote user’s login is validated by the internal edge communicating with the call/control system. When a Jabber client signs in from outside, the external edge accepts the session but it is the internal Expressway-C that talks to Cisco Unified Communications Manager to verify the user’s credentials against the directory and authorize registration. This coordination between Expressway-C and CUCM ensures the remote user is authenticated and allowed to register, enabling presence and collaboration features. Expressway-E handles the outside connection, but the actual credential check happens through the Expressway-C and CUCM pairing.

In Mobility and Remote Access, the remote user’s login is validated by the internal edge communicating with the call/control system. When a Jabber client signs in from outside, the external edge accepts the session but it is the internal Expressway-C that talks to Cisco Unified Communications Manager to verify the user’s credentials against the directory and authorize registration. This coordination between Expressway-C and CUCM ensures the remote user is authenticated and allowed to register, enabling presence and collaboration features. Expressway-E handles the outside connection, but the actual credential check happens through the Expressway-C and CUCM pairing.