TE1 LED Operation
The following is a diagram of the end of the TE1 card identifying the LEDs on the card.
Port Open
This LED has the following states:
Off |
This could mean that the
driver is not loaded into the Kernel, or the card has not been loaded with
firmware. |
On |
The card has been loaded and
started, but port has not been opened, with ifup.
|
Flashing |
The card has been loaded and
the port open and running. |
LOS
This LED has the following states:
Off |
No LOS alarm condition
|
On |
This could mean the line is
disconnection or the receive signal level is too low. The port may be
configured for short haul when it should be set for long haul. Note TE1
will transmit a Remote Alarm Indication (RAI) to the remote end in response
to a LOS or LFA (Loss of Framing Alignment).
|
RRA
This LED has the following states:
Off |
No RRA alarm condition
|
On |
This means the port is receiving
an RAI alarm from the remote end. This indicates that the remote end has a
problem with its receive signal. There could be a cable problem, or a
signal level problem or there may be a framing structure mismatch between ends.
|
AIS
This LED has the following states:
Off |
No AIS alarm condition
|
On |
This means the port is receiving
unframed all 1's from remote end. This may indicate the remote device is out
of service or there is a framing structure mismatch between ends.
|