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Monitoring the DSU
4-3
7510-A2-GB20-00
March 1997
Health and Status
The following messages appear in the first column of the System and Test Status
screen. The highest priority Health and Status message also appears on all ATI
screens on the bottom right.
Table 4-2. Health and Status Messages (1 of 2)
Message
What Message Indicates What To Do
Cross Pair
Detection
The DDS Receive (RX) and
Transmit (TX) pairs are
crossed on the network
interface. Alarm LED is on.
Reverse the RX and TX pair at the
punchdown block or other
termination point.
No Signal
hhh:mm:ss
1
No signal is being received.
Local DSU network problem.
The Alarm and NS LEDs are
on and Network Performance
Statistics are active.
1. Verify that the network cable is
securely attached at both ends.
2. Contact network provider.
Out of Service
hhh:mm:ss
1
DSU is receiving out of
service code from the
network for the remote unit.
The Alarm and OOS LEDs
are on and Network
Performance Statistics are
active.
1. Verify that the remote site is in
service.
2. Contact network provider.
Out of Frame
hhh:mm:ss
1
DSU is detecting an out of
frame condition, associated
with:
H Receiving out of frame
code from the network.
H DSU detecting out of frame
errors with 64 kbps CC
data rate.
H 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 is 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.
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.
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.