Twenty-four voice signals are to be transmitted over a single high-speed telephone line. What is the bandwidth required (in bps) if the standard analog-to-digital sampling rate is used and each sample is converted into an 8-bit value?

3.1 Mbps

Explanation:

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

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