SYMBOL
NO SYMBOL IN DISPLAV
BETWEEN THESE TWO SYMBOLS
DISPLAY SOLID SQUARE
DISPLAY SOLID CIRCLE
DISPLAY ALTERNATES
BETWEEN SOLID AND CLEAR
ON AND OFF
DESCRIPTION
LINE IDLE
AT THIS SET
LINE BUSV AT
ANOTHER SET
CALL ON HOLD
AT THIS SET
CALL ON HOLD AT
ANOTHER SET
MEANING
INCOMING CALL
LINE BUSY
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