A T3 line consists of 28 T1 channels (or data streams). A T1 channel is identified by its number in the range 1–28.
Each T1 channel is an aggregate of 24 DS0 timeslots, as shown in Figure 2. To configure an entire T1 line, assign 24 timeslots to each channel.
Figure 2: T1 Channels and DS0 Timeslots on a T3 Line
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