MuxRates

Result: standard mapping

How many STM-4s are in an ODU3?

An ODU3 carries 64 STM-4s, per ITU-T G.709 and ITU-T G.707. This path maps STM-256 into ODU3 as a client, then follows that client's tributaries.

64

STM-4s in an ODU3

Working

ODU3 → 1 × STM-256 → 64 × STM-4

  1. 1 × STM-256 in each ODU3 ITU-T G.709Client mappingCBR STM-256 mapped into OPU3.
  2. 64 × STM-4 in each STM-256 ITU-T G.70764 × STM-4.

Leftover capacity

506.098983 Mbit/s of each ODU3 line rate (40.319218983 Gbit/s) sits outside 64 × 622.080 Mbit/s of STM-4 line rate (39.813120 Gbit/s). That remainder is overhead, fixed stuff or justification. It is not another whole tributary.

ODU3 reference · STM-4 reference · Open in the converter