A. Frames of lower rate can be synchronously time-division multiplexed into a higher-rate frame B. Multiplexing is synchronous tdm C. All clocks in the network are locked to a master clock D. Sts-1 provides the data rate of 622.080mbps
A. Sdh is similar standard to sonet developed by itu-t B. Synchronous digital hierarchy C. Sdh stands for synchronous digital hierarchy and is a similar standard to sonet developed by itu-t D. None of the mentioned