B8ZS


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B8ZS

(Binary 8Zeros 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.
References in periodicals archive ?
Next, it seemed all carriers had problems testing clear-channel B8ZS and ESF.
Many carrier personnel do not know anything about B8ZS or ESF.
AT&T also offers 64-kb/s clear channel capability using B8ZS as the preferred coding, but also supports the Alternate Channel Alternate Mark Inversion (ACAMI) line coding.
ACAMI is not as efficient as B8ZS and wastes bandwidth since two DS0s are used to send one 64 kb/s of user data.
Equipment capable of accepting B8ZS can be used with a DS1 signal source whether or not the source incorporates B8ZS.
To further improve design flexibility, the CS61304A/305A operate either with internally implemented AMI (Alternate Mark Inversion), B8ZS (Bipolar with 8-Zero Substitution), or HDB3 (High Density Bipolar of order 3) coders/decoders, or the internal circuitry can be bypassed, allowing the devices to operate with external line coders/decoders.
In keeping with Verilink's tradition as a pioneer of industry standards, it conforms to B8ZS and extended superframe (ESF) standards.