Paradyne 3800 Release Note page 13

Circuit Quality (cq)
The following fields their possible values display for the 3910, 3911, 3920Plus and 3921Plus
modems:
Receive level: Possible range: –204.7 to +204.7 dBm.
Signal/noise: Possible range: <0.0 to >102.3 dB.
Phase jitter 20–300 Hz: Possible range <0.0 to >99 degrees.
Freq offset: 1–10 Hz.
Non-linear distortion: Possible range: >0.0 to <-102.3 dB.
Retrains: 0–255, computed for the last 15 minutes.
Gain hits: 0–255, computed for the last 15 minutes.
Phase hits: 0–255, computed for the last 15 minutes.
Impulse hits: 0–255, computed for the last 15 minutes.
Dropouts: 0–255, computed for the last 15 minutes.
Signal quality: Possible values: excellent, good, fair, poor and no signal.
Near end echo: Possible range: >0.0 to <-102.3 dBm.
Far end echo: Possible range: >0.0 to <-102.3 dBm.
Far end delay: Far end delay in milliseconds (msec).
Echo freq offset: Possible range: <-51.1 to 51.1 Hz.
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