In SITOR (NBDP) communication, what is one aspect of how ARQ works?

In SITOR (Ship-to-Shore Telex Over Radio) communication, which uses the NBDP (Narrow Band Direct Printing) system, ARQ (Automatic Repeat reQuest) is a key feature that enhances the reliability of message transmission. The fundamental aspect of ARQ is that it allows the receiving station to send feedback to the transmitting station regarding the successful receipt of messages. If a message is not received correctly, ARQ facilitates automatic retries for lost or corrupted messages, ensuring that the information can be accurately communicated.

The reliability offered by ARQ is essential in maritime communication, where clear and accurate messaging can be critical for safety and operational efficiency. This automatic retry function helps prevent miscommunication and allows for a robust exchange of essential information over limited-bandwidth channels. In contrast, other options either describe features that do not align with how ARQ functions or wander into areas that do not apply to this specific context, such as communications systems unrelated to ARQ or the specific methodologies used in SITOR communications.