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What a DS2 contains

A DS2 carries 96 DS0s, per ANSI T1.107.

DS2 → 4 × DS1 → 24 × DS0

4 DS1s
4 × 24 = 96 DS0s

Down to DS0

4 × DS1 ANSI T1.107Four DS1s, bit-stuffed up to the 6.312 Mbit/s DS2 line rate.
1. 24 × DS0 ANSI T1.10724 payload timeslots. The framing bit adds 8 kbit/s and brings the line rate to 1.544 Mbit/s.

DS2 rates and aliases