... bit error testing Signal loss alarm, AIS alarm, framed remote alarm, multi-framed remote alarm, out-of-frame, and pattern loss alarm Frequency offset testing Voice channel ... : 2048kbit/s ± 50ppm (G.703 requirement±100ppm)(2) Signal code: HDB3, AMI.(3) Input jitter tolerance: G.823 Fig.10 ... 1, 215-1, 220-1, 223-1, and artificial code(7) Error code insertion: Bit error, Pattern slip, None single, Ratio 10 ...