1. Suppose, some students of BRACU have opened a new telecommunication company named "BRACTel". They want to use the concept of multiplexing. Let's assume that "BRACTel" has 4 voice channels, each of 70Mbps. They use synchronous TDM to multiplex these channels. If 4 characters at a time are multiplexed (4 characters in each output slot of each output frame), i. What is the size of an output frame in bits? ii. What is the output frame rate? iii. What is the output data rate? iv. Input bit duration? v. Output bit duration?

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