Paradyne Comsphere 3920Plus Installation And Operation Manual page 86

COMSPHERE 392xPlus Modems
If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory.
When the Save completes, the message Save Completed appears.
If the edited VF threshold is invalid (out of range), the error message Thd Out of Range appears.
This indicates the Save procedure was unsuccessful. Return to the Edit screen and correct the
invalid threshold range.
To correct the invalid VF threshold, press the
Edit/Save/Reset screen.
Select Reset to restore the original default values into memory.
Repeat the Edit and Save procedure until the VF threshold(s) is valid and the Save completes
successfully (Save Completed).
To exit this function and remain in the Control branch, press the
Top-Level menu, press the
Health and Status VF alarms are reported to the front panel LED and the Network Management
System (NMS) based on the parameters in Table 3-8.
VF Thresholds
Receive Signal Level High
Receive Signal Level Low
Signal to Noise Ratio
Non-Linear Distortion
Retrains (per 15 minutes)
Signal Quality
Near Echo
Far Echo
3-52
Save VF Thresh
Thd Out of Range
F1 F2 F3
VF Thresholds
Edit Save Reset
F3
F1 F2
key.
Table 3-8
(1 of 2)
Valid Ranges for VF Thresholds
Valid Ranges
0 dBm to –15 dBm
–16 dBm to – 50 dBm
5 dB to 40 dB
15 dB to 50 dB
1 to 255 trains
Excellent (lowest)
Good
Fair
Poor
No Signal (highest)
0 —38 dBm
0 —38 dBm
April 1995
key to return to the VF Threshold
key. To exit and return to the
Default Values
Above –9 dBm
Below –23 dBm
Below 23 dB
Below 30 dB
15 trains
Good
Above –20 dBm
Above –20 dBm
3920-A2-GN31-10