24 voice signals are to be transmitted over a single phone line. What is the bandwidth required if the standard analog-to-digital sampling rate is used and each sample is converted into an 8bit value?

Voice comes in 8000 Hz frequency, so 16000 samples required each seconds.

1 sample if of 8 bits.

16000 sample if of 128000bits.

these bits is send per second.

so bandwidth required is 128kbs for single voice.

for 24 it is 24 x 128 kbps

= 3072 kbps

= 3.1 mbps