Agenda - 11-17-2011 - 1 - Attachment 1

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Orange County Emergency Management, North Carolina Final VIPER Anal sis Re ort Au ust 20, 2004 Redundancy The privately owned and operated radio system required redundancy in the design. The privately owned design master site equipment in particular was redundant. In contrast, VIPER currently operates with anon-redundant zone controller in Raleigh. Failure of the zone controller in Raleigh will cause loss of wide-area calls involving more than one site. Sites losing connection with their Zone Master site will operate independently in site trunked mode. Radio communications between units logged into a site acting independently is supported until the zone controller is restored. Direct connected consoles would lose communications with all sites associated with the master site. This will be mitigated by having a RF control station at each dispatch operating position as a backup. NC-SHP recognizes the missing redundancy and has stated their future plans for VIPER include redundant zone master equipment. FCC Licensing Orange County will be responsible for obtaining frequencies and FCC licenses for the entire private system. NC-SHP is taking responsibility for obtaining frequencies and FCC licenses for the VIPER trunked repeater channels and microwave links making up the infrastructure. Orange County and its communities will have the responsibility to obtain FCC licenses for non-fixed (subscriber) equipment including control stations whether a private system or VIPER is chosen. 800MHz Mutual Aid Conventional Repeaters were included in the privately owned system design to support interoperability with 800 MHz users with equipment not compatible with VIPER. NC-SHP has stated that conventional 800 MHz repeaters will be installed at VIPER sites for the same purpose. Locations and channels have yet to be determined as of this report. Section 7 -Comparison of Private System and VIPER Y~..~ Page 32 of 43 ,. ,.,