When requesting a direct TELEX connection to a vessel's Inmarsat-B terminal, (i.e. making a SITOR call to an Inmarsat-B unit) the GMDSS operator must:

Correct Answer: Option B — DIRTLX, 0, Ocean Area Code, TELEX number, +.

Under USCG National Maritime Center examination standards, the accepted correct answer is: DIRTLX, 0, Ocean Area Code, TELEX number, +..