For ARQ communications with a Public Correspondence Coast Station, which sequence of events best describes reaching the point in time where the text of telex communications should be sent.

Correct Answer: Option C — Transceiver setup, SELCALL selection, Initiate Call, wait for exchange of answer-backs (WRU-AAB), GA+?, enter DIRTLX xy+, MOM, MSG+? and exchange of terminal answerbacks.

After the initial call and answerback exchange, the coast station sends 'GA+?' to invite instructions. The operator enters the 'DIRTLX' command followed by the destination number and a plus sign. The system then prompts for the message ('MSG+?') after the terminal answerbacks are exchanged, confirming the connection to the land-based telex subscriber.