... performance testing Detailed Product DescriptionTest E1 BER, datacom interface, alarm, loop delay, large 320*240 ... Up to G.823. (4) Impedance of output interface: Balance 120Ω, up to G.703(5) ... ) Alarm insertion: None, AIS, PatterlessDatacom Technical(1) Data interface type: V.24, V.35, V.36, X ... up clockPhase relation between receive clock and receive data: Co-direction or reverse direction.Clock Rate ...