SL64 board is available for OSN 2500.

Which of the following is the electrical layer cost of OTN? (Multiple choice).

Which of the following bytes in the regenerator part overhead are associated with R-OOF and R-LOF? (Multiple Choices)

For OSN3500, there is a slot mapping relationship between the processing board and the interface pre-processor. The processing board in slot 1 maps to the interface board in slots 19-20.

Which of the following methods can be used to multiplex low-order ODUK to higher-order ODUk?