A phone at a police station is used for both emergency and personal calls. Personal searches Emergency calls are made on a first come, first served basis, every 5+-1 minutes. has priority and can prevent other calls. They arrive at a rate of one every 15+-5 minutes. Emergency calls take 3+-1 minutes to complete, while personal calls take 2+-2 minutes to complete. twenty percent non-urgent phone users want to make another call as soon as possible, but they are given the lowest priority for their second call. Simulate up to 200 calls of all types complete. Estimate phone usage. Simulate in ARENA program