People need to communicate with each other, the station needs to have a way to request supplies, security needs to share security info quickly but securely, AI and cyborgs have a unique way of communicating, and of course the spies and traitors are always on the lookout for some juicy rumors and corporate secrets. This just asks for an advanced communication systems with several points of failure.
The ideas of localized relays were proposed, where player could disrupt comms in one area of the station and it would take a while before people outside realize..