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Which call flow matches traffic from a Mobile and Remote Access registered endpoint to central call control?
Correct Answer: A
The call flow for a Mobile and Remote Access registered endpoint to central call control is as follows: The endpoint registers with the Expressway-C. The Expressway-C forwards the registration request to the Expressway-E. The Expressway-E forwards the registration request to the Cisco UCM. The Cisco UCM registers the endpoint. When the endpoint places a call, the call flow is as follows: The endpoint sends the call request to the Expressway-C. The Expressway-C forwards the call request to the Expressway-E. The Expressway-E forwards the call request to the Cisco UCM. The Cisco UCM places the call. The Expressway-C and Expressway-E are used to provide secure access to the Cisco UCM for endpoints that are not located on the corporate network. The Expressway-C is located on the corporate network, and the Expressway-E is located in the DMZ.