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Redwood City Police . <br /> Department System Performance <br /> �T In addition to the data in these message profiles, the following <br /> � parameters were included ia the throughout and capacity <br /> simulations: <br /> Radio Frequeacy Band . 806 MHz <br /> Radio Data Channels 1 <br /> 'Data Rate 19,200 bps <br /> RF Protocol _ �-� <br /> Contention Control SDSMA <br /> Scheme <br /> Trausmitter Attack Time 5 ms <br /> Network Controller RNC <br /> Random Channel Eirors* 5% <br /> * -Relates to required coverage reliability. <br /> TABLE 4- System Parameters <br /> The results of these simulations were measured for the inbound <br /> `-. - channel utilization,the outbound channel utilization, and the RNC <br /> utilization. This process includes all equipment between the RNC <br /> and the NIDDs,inclusive. <br /> The predicted system perfonnance is shown below for message <br /> profile shovKn above,and was simulated using various numbers of <br /> units. To accommodate the possibility of additional units being <br /> added to the system in the future,the capacity simulations have <br /> been executed for a range of 50 to 200 units, in increments of 50 <br /> units. The results shown below include the following information: <br /> QirroroROC� , 3 - 11 <br /> . _ <br />