A bit signaling procedure used in most T1 transmission facilities where one bit from every sixth frame of each of 24 T1 subchannels is used for carrying supervisory signaling.

[What does it stand for? Is this the same as "bit robbing"?]

Last updated: 1997-05-05

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Nearby terms:

AAUIA&BabbrevAbbreviated Test Language for Avionics Systems

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