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OC-3c

OC-3c ("c" stands for "concatenated") concatenates three STS-1 (OC-1) frames into a single OC-3 look-alike stream.

OC-3c ("c" stands for "concatenated") concatenates three STS-1 (OC-1) frames into a single OC-3 look-alike stream. The three STS-1 (OC-1) streams interleaved with each other such that the first column is from the first stream, the second column is from the second stream, and the third is from the third stream. Concatenated STS (OC) frames carry only one column of path overhead because they cannot be divided into finer granularity signals. Hence, OC-3c can transmit more payload to accommodate a CEPT-4 139.264 Mbit/s signal. The payload rate is 149.76 Mbit/s and overhead is 5.76 Mbit/s.

Key Terms

definition
first column
first stream
mbit
second column
second stream
single look alike stream
sts
third stream
usage

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Synonymns

OC-3c
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Sources & Credits

Last modified on March 11 2020
Content adapted from Wikipedia
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