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23 <br /> 1 • Schools <br /> 2 • Animal Control <br /> 3 • OWASA <br /> 4 • Solid Waste <br /> 5 <br /> 6 Project Overview— Needs <br /> 7 • Radio coverage improvements <br /> 8 o Portable radios —outdoor <br /> 9 o Portable radios — indoor <br /> 10 o Leverage new sites for multiple purposes <br /> 11 • Radio system capacity improvements <br /> 12 o Increase number of channels to reduce congestion <br /> 13 o Leverage new microwave system - multiple purposes <br /> 14 • Local system administration <br /> 15 o Add users <br /> 16 o Change aliases <br /> 17 o Modify talk groups <br /> 18 • Interoperability (ability to communicate with others and mutual aid) <br /> 19 o Intra-County <br /> 20 o Inter-County <br /> 21 • System availability improvements <br /> 22 o Direct County control of system elements <br /> 23 o Direct County control of system maintenance <br /> 24 o Redundancy <br /> 25 • Estimated costs <br /> 26 • Migration plans <br /> 27 <br /> 28 Existing Radio Systems <br /> 29 • VIPER (Voice Interoperability Plan for Emergency Responders) — 700/800 MHz P25 — <br /> 30 all public safety users <br /> 31 o No local system administration <br /> 32 o Single points of failure/ lack of redundancy <br /> 33 o Expansion possible— current model: purchase equipment and give to State <br /> 34 • UHF — backup system for Chapel Hill <br /> 35 • VHF —fire paging, schools, animal services, backup for multiple public safety agencies <br /> 36 <br /> 37 Alternatives Considered <br /> 38 • VIPER 700/800 MHz P25 channel expansion <br /> 39 • Standalone 700/800 MHz P25 <br /> 40 • Shared 700/800 MHz P25 system (Durham County) <br /> 41 • Standalone VHF Analog <br /> 42 Standalone alternatives consist of building blocks that can be combined between alternatives <br /> 43 <br /> 44 VIPER Channel Expansion <br /> 45 • Add channels to existing VIPER sites <br /> 46 • Improves capacity—fewer busies/blocked calls <br /> 47 • Lowest cost of alternatives <br /> 48 • Does not address <br /> 49 o Required radio coverage improvements <br />