OAU gain is continuously adjustable, and the noise figure (NF) is different under different gain conditions, generally the larger the gain, the smaller the noise figure

NE1 is connected to NE2. NE1 uses OptiX SDH equipment to use time slot of VC4:1:2. If the service can be activated normally, what is the VC12 time slot number required to use equipment from other manufacturers on the opposite end?

What are the limiting factors of CES ACR synchronization? (multiple choice)

In general, which PHB is the signaling flag?

Which of the following is correct for the FEC delay relationship ()