from comments
9:20 So that's telling you that you have an incoming message, turn the knob to line up the indicator with the blinking light, and you send/receive messages with the red buttons at the top. Certain missions will require you to receive and acknowledge orders from command before you can complete the objective .
turning the dedicated "comms" knob in a lockpicking minigame to acknowledge your orders lol
I only played it a couple of times at an internet cafe, but it was a ton of fun.