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 DS3s are in an OC-768?

An OC-768 carries 768 DS3s, per Telcordia GR-253.

768

DS3s in an OC-768

Working

OC-768 → 768 × OC-1 (STS-1) → 1 × DS3

768 × OC-1 (STS-1) in each OC-768 Telcordia GR-253768 × OC-1 (STS-1). Channelized OC-768 is 768 STS-1s.
1 × DS3 in each OC-1 (STS-1) Telcordia GR-253Asynchronous DS3 mapping into the STS-1 synchronous payload envelope.

768 OC-1s
768 × 1 = 768 DS3s

Leftover capacity

5.455872 Gbit/s of each OC-768 line rate (39.813120 Gbit/s) sits outside 768 × 44.736 Mbit/s of DS3 line rate (34.357248 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 889.95, which floors to 889 DS3s by bit rate only. The standard mapping is 768. Use the mapping.

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