Question 2. (30 points) Consider a 7-cell system covering an area of 4800km2. The traffic in the seven cells is as follows: 1 2 3 4 5 6 7 Cell number 30.8 66.7 46.8 33.2 38.2 32.6 37.2 Traffic (Earlangs) Each user generates an average of 0.04 Erlangs of traffic per hour, with a mean holding time of 120s. The system consists of a total of 395 channels and is designed for a grade of service of 0.025. C. a. Determine the number of subscribers in each cell. b. Determine the number of calls per hour per subscriber. Determine the number of calls per hour in each cell. d. Using the table at the end of the tutorial, determine the number of channels required in each cell. Determine the total number of subscribers. f. Determine the average number of subscribers/channel. g. Determine the subscriber density per km2. h. Determine the total traffic in Erlangs i. Determine the Erlangs per km2. j. What is the radius of a cell? e. Question 3. (50 points) A bank has its head office in the financial district in the middle of a city. It has six branches, three in the north of the city and three in the south all 5 km from the centre and spaced 3 km apart. The bank wishes to link all its branches via private leased lines but must decide between providing an individual line to each branch of via a number of inter-branch links and a smaller number of multiplexed lines to the centre. If a modem costs 100, a multiplexer/demultiplexer costs 200 and leased lines cost 100 per km per year to rent, suggest a design that will yield the most cost effective solution if the installation is to remain in operation for four years