Dumb 2300 AD question: FTL Communications?


So I've been reading the 2300 AD box-set for the first time (dead tree copy) and I must have missed where interstellar communications are discussed. Does the setting have FTL comms, or are messages relayed by physical ships stopping by a system and transmitting data? If anyone could point out a page reference that answers the question, I'd sure appreciate it. Thanks :).

Presuming that there are no faster then light communication mechanisms, it seems that messenger ships would be highly protected by law. Similar to postal delivery system in the early days of the U.S.