Health And Status - Paradyne 7520 User Manual

Zhone 7520 dsu: users guide
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Health and Status

7520-A2-GB20-20
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
Cross Pair
The DDS Receive (RX) and
Detection
Transmit (TX) pairs are
crossed on the network
interface. Alarm LED is on.
No Signal
No signal is being received.
1
hhh:mm:ss
Local DSU network problem.
The Alarm and NS LEDs are
on and Network Performance
Statistics are active.
Out of Service
DSU is receiving out of
1
hhh:mm:ss
service code from the
network for the remote unit.
The Alarm and OOS LEDs
are on and Network
Performance Statistics are
active.
Out of Frame
DSU is detecting an out of
1
hhh:mm:ss
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.
Excessive BPVs
Data rates do not match or
1
hhh:mm:ss
network trouble is causing
bipolar violations. Alarm LED
is on and Network
Performance Statistics are
active.
User Data Port
The DTE is not ready to
DTR Off
transmit or receive data. This
message will not appear
unless Monitor DTR is
enabled.
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.
What To Do
Reverse the RX and TX pair at the
punchdown block or other
termination point.
1. Verify that the network cable is
2. Contact network provider.
1. Verify that the remote site is in
2. Contact network provider.
1. Verify that the line rate matches
2. Contact network provider.
1. Verify that the network cable is
2. Contact network provider if
Check on the DTE status. Verify
that the DTE is powered up and
asserting DTR.
May 1998
Monitoring the DSU
securely attached at both ends.
service.
the configured rate.
securely attached at both ends.
problem persists.
4-3

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