I want to request a way for scripter to check if certain player speaks in VON. I propose two ways:

1. Scripting command.

Suggested syntax: isPlayerUsingVON <unit>

Should return -1 if player doesn't speaks and values >=0 with VON channel index.

2. Mission event handler

Suggested name: "PlayerStartedVON", "PlayerEndedVON"

Which should fire when player starts speaking on VON and stops respectively. Event handler should call code and pass player unit that speaks and channel index.