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• <br />EXHIBIT A --ATTACHMENT 3 <br />• SITE SPECIFICATIONS <br />Environmenta(:. - <br />- Equipment to be located in a space that is clean, dry and secure <br />-----spa-e should Ue'corditibried by-heating•and-cocling,equipment and: <br />maintain constant temperature in the range of 68 to 83 degrees <br />Fahrenheit, humidity 40 - 60% <br />.Network Equipment Rack: <br />Provide 19".X:72" standard steel or aluminum telecom relay rack with EIA <br />hole spacing. <br />Rack should be securely fastened to the floor using anchors appropriate <br />for the flooring type ' <br />Install should provide a minimum of 36" clearance in front and behind <br />relay rack for equipment installation andservicing <br />Depending on space availability, County may request Zayo to provide an <br />exception to one Or more of these network equipment rack specifications <br />for certain locations.• <br />Grounding: <br />- Relay rack should be earth grounded utilizing building steel, cold water <br />pipe or connection to existing ground bar <br />Power: <br />- A negative 48 Volt DC power. system with appropriate power backup to be <br />provided and sized in accordance with the network equipment <br />.reqUirements listed below. Each element will, require an•A and B feed. A <br />• and .B feed can be provided from a single rectifier and distribution source. <br />- Battery and/or generator backup time should be'a minimum of 8 hours and <br />based on the circuit prOvided to each network element. A and B feeds <br />• should be counted as a single, redundant circuit (Example: 40 amp A - <br />feed and 40 amp B feed equals 40 amps of total load) <br />Network Equipment Requirements: <br />Cisco' 7 series: <br />Dimensions <br />- Height: 33.3 in. (82.3 cm) <br />- Width: 17.2 in. (42.5 cm) <br />- Depth: 18.1 in. -c44.7 cm) <br />Power: <br />- 40 A per DC input @ -48 VDC input voltage (total of4 <br />inputs) per power supply (2 power supplies required. per <br />• router) <br />Cisco 4900: <br />Dimensions • <br />- 2RU <br />Power: . <br />Page 1.6 of 19 <br />