Monitoring the DSU
6-6
7610-A2-GB20-00
November 1996
Table 6-1.
Health and Status Messages (2 of 2)
Message
What To Do
What Message Indicates
Out of Frame
hhh:mm:ss
1
DSU is detecting an out of
frame condition, associated
with:
Receiving out of frame
code from the network.
DSU detecting out of frame
errors with 64 kbps CC
data rate.
DSU unable to synchronize
local receiver circuit with
line signal.
1. Verify that the line rate matches
the configured rate.
2. Contact network provider.
Excessive BPVs
hhh:mm:ss
1
Data rates do not match or
network trouble causing
bipolar violations. Alarm LED
is on and Network
Performance Statistics are
active.
1. Verify that the network cable is
securely attached at both ends.
2. Contact network provider if
problem persists.
In-Band Fram Err
hhh:mm:ss
1
The IMC communication
between the local and remote
DSU is not working.
1. Verify that the remote unit has
IMC set at the same rate.
2. Contact network provider if
problem persists.
User Data Port
DTR Off
The DTE is not ready to
transmit or receive data. This
message will not appear
unless Monitor DTR is
enabled.
Check on the DTE status. Verify
that the DTE is powered up and
asserting DTR.
Net Mgmt Link
Down
Communications between the
DSU and an NMS are not
possible and the:
Management Port Use is
set to Net Link and/or
IMC is enabled.
1. Check the devices in the
management path data and the
status of the NMS.
2. Try to access the unit remotely.
Device Fail
yyyyyyyy
An internal error has been
detected by the operating
software.
yyyyyyyy indicates
the 8-digit hexadecimal failure
code.
1. Provide the 8-digit failure code
shown (
yyyyyyyy ) to your service
representative.
2. Reset the DSU to clear the
condition and message.
DSU Operational
DSU is functioning properly
and there are no status
messages to display.
No action needed.
1
hhh:mm:ss indicates the amount of time the condition has existed in hours, minutes,
and seconds. When the maximum time has been exceeded, 255:59:59+ appears.
