<communications> 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"?]
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Nearby terms: AARP « AARP probe packets « AAUI « A&B » abbrev » Abbreviated Test Language for Avionics Systems » ABC