Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
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A. B. C. D.B.
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-10/Mobile-Remote-Access-via-Expressway-Deployment-When configuring static NAT on an Expressway-E, the attribute in the Session Description Protocol (SDP) that is affected is the "connection" attribute.
The connection attribute is a part of the SDP that describes the network connection parameters for the media streams of a call. It includes the IP address and port number of the media stream. When a call is initiated through the Expressway-E, the connection attribute in the SDP is modified to reflect the static NAT address configured on the Expressway-E.
Static NAT is a technique used to map a public IP address to a private IP address, allowing devices on a private network to communicate with devices on the public network. In the context of an Expressway-E, static NAT is used to translate the private IP address of the internal endpoint to a public IP address that can be used for communication with external endpoints.
By modifying the connection attribute in the SDP with the public IP address of the Expressway-E, the external endpoint can establish a media stream with the internal endpoint. The modification of the connection attribute in the SDP is done automatically by the Expressway-E when it receives the SDP from the internal endpoint.
Therefore, the correct answer is A. connection.