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In T-carrier, a basic digital signaling rate of 64 kb/s,
corresponding to the capacity of one voice channel. DS0 forms the basis for the
North American digital multiplex transmission hierarchy. It may support twenty
2.4 kb/s channels, or ten 4.8 kb/s channels, or five 9.67 kb/s channels, or one
56 kb/s channel, or one 64 kb/s channel.
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