Place it at the start of a check-in sequence, right before a response beat, then follow the reply with the Metal Gear Alert for a failed connection or a Windows XP Error for a system that never answers back at all.
Über diesen Sound
This is a short voice clip of a single German word spoken as a question, 'Kontakt?', stretched over about seven seconds. The delivery feels like a radio check or a call into silence, waiting for an answer. It gives listeners a curious, slightly tense feeling, as if contact has just been made or is about to be lost.