Displaying System Information
4-8
9121-A2-GB20-00
June 1997
Message
What To Do
What It Indicates
Primary Clock Failed
A failure of the primary
clock source configured for
the NAM is detected and
the secondary clock is
providing the timing for the
NAM.
This condition clears when
the configured primary
clock is restored.
If the primary clock was
derived from the network,
contact the network provider.
Check the clock source
connector.
Secondary Clock
Failed
A failure of the secondary
clock source configured for
the NAM is detected and
the internal clock is
providing the timing for the
NAM.
The clock source will not
automatically switch from
internal until the primary
clock source returns.
If the secondary clock was
derived from the network,
contact the network provider.
Check the clock source
connector.
Yellow at Network
A yellow alarm signal is
received on the network
interface.
1. Network cable problem.
2. Far-end access unit has
lost framing sync on the
T1 line.
3. T1 facility problem.
1. Check that your network cable
is securely attached at both
ends.
2. Check the status of the
far-end device.
3. Contact your network provider.
Yellow at DSX-1
A yellow alarm signal is
received on the DSX-1
interface. DTE has
detected a LOS or OOF
condition.
1. Check that the DSX-1 cable is
securely attached at both
ends.
2. Check the status of the
attached equipment.