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A video conference call generates 960 Kbps of traffic. How many bytes of a DS-1 frame...

A video conference call generates 960 Kbps of traffic. How many bytes of a DS-1 frame must be used for the transmission of the above 960 Kbps video conference call? If this video call lasts 6 minutes, then what is the total number of bytes that will be transmitted by this video-conference call? You must briefly explain, how did you derive your answers.

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Answer #1

* Generated traffic by video conference call = 960kbps

* A DS1 telecommunication circuit multiplexes 24 DS0s. The twenty-four DS0s tested 8,000 times each second (one 8bit PCM sample from each DSO per DS1 outline) expend 1.536 Mbit/s of bandwidth. One confining piece includes 8 kbit/s of overhead, for a sum of 1.544 Mbps, determined as pursues:

so 960K * 1.54M = 1.44Tbps

* If this video call lasts for 6 minutes then the total number of bytes that will transmitted by this call will be:

1 byte = 8 bits. so 960kbits = 120kbytes.

If the call is for 6 minutes (360 secs) . Then total number of bytes transmitted will be 120kbytes * 360 = 43.2Mbytes .

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