I can help here, which MediaLine_ fields in particular are you interested in knowing more about?

The 'Other' section in the Advanced tab (as well as the Debug tab) are both primarily geared towards internal engineering teams. We use them for investigating application behavior and assisting with customer incidents. Many of those fields won't be particularly useful to customers on their own, while some of those fields are found in Call Quality Dashboard (albeit under more friendly names with the 'MediaLine_' bits truncated). For those that are available in CQD, we have definitions available here: Dimensions and measurements - Call Quality Dashboard (CQD) - Microsoft Teams | Microsoft Docs