A CDE Definition
(Binary 8 Zeros Substitution) An encoding method in T1 and E1 transmission that substitutes a special bit pattern for 8 consecutive zeros in order to maintain ones density. See ones density.
Providing a guaranteed number of 1s every so many bits in a transmission. When too many consecutive 0s are sent, there is too much time in between pulses (voltage), and the receiving circuit can lose synchronization. See B8ZS and AMI.
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