Question: Blocking Probability for Single-Cell Radio Systems ([BaA81] and [BaA82]) A cellular radiotelephone system serves a given geographical area with m radiotelephone channels connected to a single switching center. There are two types of calls: radio-to-radio calls, which occur with a Poisson rate λ1 and require two radio channels per call, and radio-to-nonradio calls, which occur with a Poisson rate λ2 and require one radio channel per call. The duration of all calls is exponentially distributed with mean 1/μ. Calls that cannot be accommodated by the system are blocked. Give formulas for the blocking probability of the two types of calls.