A group of four letters assigned to represent command (s), authority (ies), activity (ies), unit (s), or geographic location(s); used primarily for the addressing of communications, but may be used as a call sign for establishing and maintaining communications..
Iqela loonobumba abane abenzelwe ukubonisa umyalelo/imiyalelo, ubuphath' amandla, umsebenzi/imisebenzivity, iqela/amaqela, okanye indawo yejiyografi; elisetyenziselwa ukusombulula uthungelwano, kodwa lingasetyenziselwa ukumisela nokugcina uthungelwano.