20-slot, NEBS Level 3, 19"-chassis option for E3Switch Ethernet to DS3/E3 converters. 3U height, 2 load-sharing AC or DC power supplies, and 20-slots which can hold a mix of E3Switch converters and IMC media converting modules. Includes IMC power-supply SNMP monitoring module. Usually ships in 1 week but budget additional time. NEBS-20$900.00 Voltage: -VAC 100-240 Volts AC-VDC -48 Volts DC +/-10% Copyright (c) 2011, E3Switch LLC, all rights reserved.