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Orange County Emergency Management, North Carolina <br />Final VIPER Anal sis Re ort Au ust 20, 2004 <br />8.4 IJNC Chapel Hill Non Public Safety <br />LJNC Chapel Hill has the option of keeping their existing conventional radio <br />systems in service to support non public safety users or constructing a separate <br />800 MHz trunked system. The VIPER limitation of two talk groups is insufficient <br />for iJNC Chapel Hill's non public safety work groups. Non public safety users <br />remaining on their existing conventional systems is a short-term solution. The <br />university will be faced with converting the conventional systems and subscriber <br />radio equipment to narrow band to meet FCC requirements in the next few years <br />if conventional operation is chosen as the long-term solution. Operating on these <br />conventional radio systems limit direct interoperability between public safety and <br />services work groups desired and required during an emergency or major event. <br />CTA recommends LJNC Chapel Hill purchase a separate 800 MHz digital trunked <br />radio system to support communications based on the number of distinct non <br />public safety work groups at UNC Chapel Hill. Having all work groups on a <br />common 800 MHz trunked radio system supports direct interoperability between <br />all the university's non public safety users. Interoperability with public safety <br />units on VIPER can be accomplished, either directly when the public safety users <br />switch to the LTNC non public safety site or indirectly via a patch set up between a <br />VIPER public safety talk group and the non public safety users by a iJNC PSAP <br />telecommunicator. Eight control stations are included in our estimate of probable <br />cost for the separate system to provide links to the UNC PSAP. <br />8.5. Migration from VIPER to Privately Owned Trunked System <br />We have been asked to consider a long term goal to migrate from VIPER to a <br />privately owned trunked radio system for Orange County. In the long term, the <br />choice will be limited to the ability to re-use any of the VIPER infrastructure in a <br />privately owned system. Considering this as a long term goal, technology and <br />newer systems will be available that may preclude re-use of the infrastructure <br />equipment from VIPER. In absence of knowing the full details pertaining to <br />ownership of equipment purchased via grants in the pending agreement between <br />Orange County and NC SHP regarding VIPER, there may be little re-use of any <br />equipment. Subscriber radios may be re-used in a privately owned system as long <br />as the equipment has not reached the end of its support life. <br />Section 8 -Potential Migration Paths <br />".,.~s ® Page 40 of 43 <br />~, F <br />