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 OC-3s are in an OC-768?

An OC-768 carries 256 OC-3s, per Telcordia GR-253.

256

OC-3s in an OC-768

Working

OC-768 → 256 × OC-3

256 × OC-3 in each OC-768 Telcordia GR-253256 × OC-3. Channelized OC-768 is 768 STS-1s.

256 OC-3s

Leftover capacity

0 bit/s of each OC-768 line rate (39.813120 Gbit/s) sits outside 256 × 155.520 Mbit/s of OC-3 line rate (39.813120 Gbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.

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