POTS Noise Normal Range
Parameter OK Marginal Not OK
Balance > 60 50–60 < 50dBm
Loss > 8.5 — < 8.5dBm
Noise < 80 20–30 < 30dBmC
POTS>Longitudinal Balance
Use Longitudinal Balance to measure the active Longitudinal
Balance on the pair. This test measures the ability of the Tip and
Ring to reject noise and crosstalk.
POTS>Longitudinal Balance>Hook-Up