How many DS0s are in a DS1?

Working

DS1 → 24 × DS0

1. 24 × DS0 in each DS1 ANSI T1.10724 payload timeslots. The framing bit adds 8 kbit/s and brings the line rate to 1.544 Mbit/s.

• 24 DS0s

Leftover capacity

8 kbit/s of each DS1 line rate (1.544 Mbit/s) sits outside 24 × 64 kbit/s of DS0 line rate (1.536 Mbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.

DS1 reference · DS0 reference · Open in the converter