| Definition: | a method of justification in which the digit time-slots used to convey a digital signal have a digit rate that is always lower than the digit rate of the original signal, and in which at each justification instant, depending on the prevailing conditions, either:
a) one digit of the original signal is transmitted in the justifiable digit time-slot, or
b) two digits of the original signal are transmitted, one in the justifiable digit time-slot with the other digit being removed and then transmitted by another means,
with these alternative justification states being indicated by unique signals formed from justification service digits
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