Is used when a COMCEN suspects a channel or node malfunction or by the nodded as the first and last message of the day in non-continuously manned COMCENS.
Isetyenziswa xa i-COMCEN irhanela ukungasebenzi komjelo okanye kwendibano-malungu njengomyalezo wokuqala nowokugqibela wemini kwi-COMCENS eqhubekekayo.