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Monitoring the DSU
6-7
7610-A2-GB20-10
November 1997
Self-Test Results
The results of the last power-up or reset self-test appear in the middle column of
the System and Test Status screen.
Table 6-2. Self-Test Results Messages
Message
What Message Indicates What To Do
Device Fail One or more of the DSU’s integrated
circuit chips has failed device-level
testing.
1. Reset the DSU and try again.
2. Call your service
representative for assistance if
Memory Fail DSU failed memory verification.
representative
for
assistance
if
the message reappears.
Passed The DSU has been plugged in or
reset and has passed the diagnostic
test. There are no other status
messages.
No action needed.
Network Interface Status
The network interface status fields are read-only:
H Line Rate (Kbps). If the DSU is connected to an operating line and the Line
Rate (Kbps) shows Autobaud and does not change to a line rate within about
25 seconds, Line Rate (Kbps) may have to be reconfigured manually. Refer
to System Options, Table A-1.
H Loop Loss (dB). The loop loss is the loss of signal strength of the receive line
signal from the local loop.
To view the Network Interface Status, follow this menu selection sequence:
Main Menu
→
Status
→
Network Interface Status
Table 6-3. Network Interface Status Screen Contents
Field
Status What the Status Indicates
Line Rate (Kbps) 56 Kbps
64 CC
64 LADS
Line rate on the network interface.
Autobaud indicates the DSU is
trying to determine the network line
64 LADS
Autobaud
trying to determine the network line
rate. This should be a temporary
condition.
No Signal No signal can be detected over the
network interface.
Loop Loss (dB)
0 to –65 dB Amount of loop loss – loss of signal
strength of the receive line signal
from the local loop, measured in
decibels.
Inoperative The line may be disconnected.