Correct Answer: B, D, ETo troubleshoot and ensure the configuration of SIP Trunks in the Avaya Session Border Controller (SBC) after an issue, the three places to check are the Media Interface, Signaling Interfaces, and Server Configuration. The Media Interface handles the media stream associated with the SIP sessions. The Signaling Interfaces manage how the SBC interacts with other devices via SIP signaling, which is crucial for establishing call connections. The Server Configuration includes settings and parameters that can affect the overall behavior and connectivity of SIP trunks with the service provider.