STM-1 contains 63 primary 2-Mbps data streams and each of them contains 30 time slots for speech.
(a) How many simultaneous calls (64 Kbps) can be transmitted over a single fiber pair used by the STM-16 optical system?
(b) What is the number of simultaneous calls if a DWDM system using a
100- GHz wavelength grid from 1,528.77 nm/196.1 THz to 1,563.86
nm/191.7 THz is implemented?
(c) The STM-16 signal is transmitted through each optical channel. What
will be the total data rate of the DWDM system from part (b)?