Quantity is how many containers you have. The result is how many tributaries fit, the path, and the leftover line rate. The choices stay in the URL, so you can share them.

Result: standard mapping

How many DS1s are in an OC-48?

An OC-48 carries 1,344 DS1s, per Telcordia GR-253.

1,344

DS1s in an OC-48

Working

OC-48 → 48 × OC-1 (STS-1) → 28 × DS1

48 × OC-1 (STS-1) in each OC-48 Telcordia GR-25348 × OC-1 (STS-1). Channelized OC-48 is 48 STS-1s.
28 × DS1 in each OC-1 (STS-1) Telcordia GR-253Seven VT groups × four VT1.5 (DS1).

48 OC-1s
48 × 28 = 1,344 DS1s

Leftover capacity

413.184 Mbit/s of each OC-48 line rate (2.488320 Gbit/s) sits outside 1,344 × 1.544 Mbit/s of DS1 line rate (2.075136 Gbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.

By bit rate only

Dividing the line rates gives 1,611.6, which floors to 1,611 DS1s by bit rate only. The standard mapping is 1,344. Use the mapping.

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