COMSPHERE 6800 Series Network Management System
Signal/noise
Signal quality
Near end echo
Far end echo
Far end delay
Echo freq offset
Figure 2-21 is a sample Circuit Quality results form for a 3600 Series DSU.
Figure 2-21. Circuit Quality Results Form for 3600 Series DSUs
2-84
Displays the measured signal-to-noise ratio. An acceptable signal to noise ratio is 24 dB
or greater.
Displays the measured signal quality. Possible values are excellent, good, fair, poor, or
no signal.
Displays the echo (in dB) measured at the near-end device.
Displays the echo (in dB) measured at the far-end device.
Displays the delay measured at the far-end device.
Displays the measured echo frequency offset.
January 1997
6800-A2-GB31-20