2 6 DSU 5600 User Manual 61200.078L1-1Chapter 4. Specifications SummaryDiagnostics• Network test center activated- CSU loopback on sealing current reversal in local loop- DSU loopback• User activated- Self test- Local loopback- V.54 activated remote loopback with:2047 test patternDTE data/data from external test setPower115 VAC4 Watts (maximum)Environment• Temperature- Operating 0°C to 50°C (32°F to 122°F)- Storage -20°C to 70°C (-4°F to 158°F)• Relative Humidity up to 95%, non-condensing