... loss*Line interface circuitry protects against lightning and power surges*Stand-Alone and Rack-Mount type optional*16-slots,elaborate cooling design ... rate:Synchronous:0.6,1.2,2.4,4.8,9.6,19.2,38.4,48,64,128KbpsAsynchronous:0.6,1.2 ... ,2.4,4.8,9.6,38.4KbpsWork mode: DCEData ...