1. A voice channel occupies a bandwidth of 32 kHz. (E, F, and G need to be multiplied together to find the bandwidth. If any value among those 3 digits is zero, consider the next digit from your ID for calculation.) 10 voice channels are to be multiplexed together using the FDM (Frequency Division Multiplexing) technique, considering a guard band of 8 kHz. Illustrate the configuration of the multiplexing and demultiplexing using the frequency domain with proper labeling. 2. We have four sources, each creating 32 8-bit characters per second. (C, D, and E need to be multiplied together to find the bandwidth. If any value among those 3 digits is zero, consider the next digit from your ID for calculation.) If the interleaved unit is a character and 1 synchronizing bit is added to each frame, find (a) the data rate of each source, (b) the duration of each character in each source, (c) the frame rate, (d) the duration of each frame, (e) the number of bits in each frame, and (f) the data rate of the link.