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Orange County Emergency Management, North Carolina <br />Final VIPER Anal sis Re ort Au ust 20, 2004 <br />TABLE OF CONTENTS <br />1.0 Introduction ......................................................................................................................... 3 <br />2.0 Technical Description of VIPER Network ......................................................................... 4 <br />2.1 Microwave Connectivity of sites serving Orange County .............................................. 5 <br />2.2 Dispatch (PSAP) Interfaces ...............................................................:............................ 5 <br />2.2.1 Direct connections to Zone Master Site .................................................................. 6 <br />2.2.2 RF Linked Dispatch .............................................................................................. .. 8 <br />Figure 2-1 Current VIPER 800MHz Sites <br />3.0 VIPER Implementation to serve Orange County .................................:........................... 10 <br />Table 3-1 Viper Sites Serving Orange County .............................................................. 11 <br />4.0 VIPER Coverage and Capacity ......................................................................................... 12 <br />4.1 Coverage ....................................................................................................................... 12 <br />4.2 Traffic Loading ............................................................................................................. 13 <br />4.2.1 Traffic Loading Definitions .................................................................................. 14 <br />4.2.2 Traffic Loading Model .......................................................................................... 15 <br />Table 4-1 Orange County Subscriber Units .................................................................. 17 <br />Table 4-2 Traffic Loading Results Summary -VIPER Sites in Orange ....................... 19 <br />Figure 4-1 NC-SHP-VIPER Coverage 6dB Gain <br />Figure 4-2 NC-SHP-VIPER Coverage OdB Gain <br />5.0 Technical Description of the Private System .................................................................... 20 <br />6.0 VIPER Opinion of Probable Cost ..................................................................................... 22 <br />6.1 Opinion of Probable Cost to join VIPER ...................................................................... 22 <br />6.2 Basis of Cost Estimates ................................................................................................. 22 <br />6.3 Subscriber Equipment for VIPER ................................................................................. 23 <br />Table 6-1 Estimate of Probable Cost for OCEM Dispatch ........................................... 26 <br />Table 6-2 Estimate of Probable Cost for iJNC-CH Department of .............................. 27 <br />Table 6-3 Estimate of Probable Cost for UNC-CH Services Standalone Fixed Site.... 28 <br />7.0 Comparison of Private System and VIPER ...................................................................... 29 <br />7.1 Functionality Comparison ............................................................................................. 29 <br />7.2 Infrastructure Comparison ............................................................................................ 31 <br />7.3 Cost Comparison Privately Owned vs. VIPER ............................................................. 33 <br />7.3.1 Short-Term Cost Comparison ............................................................................... 33 <br />7.3.2 Long-Term Cost Comparison ............................................................................... 34 <br />Table 7-1 Comparison of VIPER and Privately Owned Designs ................................. 36 <br />Table 7-2 Long-Term Opinion of Probable Cost .......................................................... 38 <br />8.0 Potential Migration Paths .................................................................................................. 39 <br />8.1 Work currently underway ............................................................................................. 39 <br />Table of Contents <br />~E,:.. -: ~ r Page 1 of 43 <br />~._... <br />