Paradyne U8777 User Manual

Page 57

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7. Monitoring and Troubleshooting

8700-A2-GB20-40

May 2002

7-5

LOS at Net, Pt

n

An LOS (Loss Of Signal)
condition has been detected
on the network interface. No
signal is being received on
Port

n

, possibly due to a local

network problem.

1. Verify that the network cable

is securely attached at both
ends.

2. Verify proper NTU and LTU

configuration.

3. Contact network provider to

troubleshoot the line.

Mismatch Rate, Pt

n

The LTU, set to a fixed DSL
rate, is attempting to operate
at a rate the NTU is not
capable of.

Set the LTU to a compatible rate
or replace the NTU.

Net Margin Threshold,
Pt

n

The signal-to-noise margin
has dropped below the
configured threshold.

1. Check the Network

Performance Statistics
screen for possible line
impairments.

2. Set the unit to run at a lower

DSL line rate.

3. Reconfigure the margin

threshold (if appropriate).

4. Contact network provider to

troubleshoot the line.

NTU/LTU Mismatch,
Pt

n

The NTU is not compatible
with the LTU.

Contact network provider.

NTU TS16 Not
Supported

The LTU is configured for
TS16 signaling and the NTU
is not configured to support
TS16 signaling.

1. Verify endpoint is a G.703

product. EIA-530-A products
do not support signaling.

2. Replace endpoint or

reconfigure TS16 to data.

OOF at Net, P

n

An Out Of Frame (OOF)
condition has been detected.
An OOF condition is declared
when 2 out of 4 frame
synchronization bits are in
error.

1. Check the Transmit Clock on

the unit and attached
equipment.

2. Set the unit to run at a lower

DSL line rate.

3. Contact network provider.

Payload Rate
Mismatch Pt

n

The endpoint device is an
EIA-530-A model that does
not support the configured
EIA-530-A payload rate.

Reconfigure the EIA-530
Payload Rate configuration
option to an acceptable rate.
See

Network Interface Options

Menu

in Appendix A,

Configuration Options

for

acceptable rates.

Table 7-1.

Health and Status Messages (3 of 4)

Message

What Message Indicates

What To Do

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