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Troubleshooting
8-10
9820-A2-GB20-20
June 2000
Table 8-1. Alarm Conditions (4 of 4)
Alarm Condition What To DoWhat It Indicates
LOS at Network 1 A Loss of Signal (LOS)
condition is detected. Either
the control leads on the
network data port are
deasserted, the TM lead is
asserted, or no clock is
detected from the NTU.
H Network cable problem.
H No signal is being
transmitted at the far-end
FrameSaver unit.
H NTU or network facility
problem.
H Check that the network cable
is securely attached at both
ends.
H Contact your network provider.
Power Supply Failure
(9820-45M)
The power supply output
voltage has dropped below
the specified tolerance
level.
Notify your service
representative. See
Replacing a
Power Module
in Chapter 12,
Hardware Maintenance
(9820-45M)
.
Self-Test Failure The unit did not pass its
basic verification tests
when it was powered on or
reset.
H Reset the unit.
H Contact your service
representative.
SLV Timeout,
DLCI
nnnn
,
frame relay link
1,2
An excessive number of
SLV communication
responses from the remote
system have been missed
on the specified multiplexed
DLCI and link.
When a hardware bypass-
capable device has been
detected at the other end of
the PVC and this condition
occurs, only user data for
EDLCI 0 will be transmitted
as long as the condition
exists.
Verify that the network LMI is up.
If it is, contact your network
service provider.
Two Level-1 Users
Accessing Device
Two users with Level 1
security access are in
session with the device.
Alert the other user before
starting tests or altering
configuration options.
Yellow at Network 1
(9820-45M)
A yellow alarm signal is
received on the network.
H Cable problem.
H T3 facility problem.
H Check that the associated
cables are securely attached.
H Contact your network provider.
1
nnnn
indicates a DLCI number of 16 through 1007.
2
frame relay link
is one of the following:
– Net1-FR1. The frame relay link specified for the network data port, Network 1.
– Port-1. The frame relay link associated with the user data port.