When planning the Avaya Session Border Controller for Enterprise (SBCE) for SIP Trunking, what is a good practice to adopt?

The media stream in WebRTC is anchored on which Avaya Aura component?
On Avaya Session Border Controller for Enterprise (SBCE), where do you access the tool that displays SIP messages, in real time, as they pass through the SBCE?
Which statement about enabling IM and Presence for a user is true?
If you need to investigate increased activity or unusual usage patterns, such as a heavy call volume on ports assigned to out-calling in Communication Manager Messaging, which report will help establish traffic trends?