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TANDBERG 3G Gateway User Manual
These LEDs indicate the following PRI status:
Green:
Normal operation
Red Alarm
or Loss of signal (LOS) indicates that there is no signal and thus no framing
info received. The same effect will be obtained by pulling out the PRI cable. This may
also be caused by a broken connector in the receiver (RX) part of the cable.
Yellow Alarm
or Remote Alarm Indicator (RAI) means that the gateway is receiving
framing info, but in this framing info the other side tells the gateway that it is not reading
the gateway’s transmitted framing info. Typically, this may be cause by a broken
connector in the transmitter (TX) part of the PRI cable. This could also indicate weak or
noisy signal in the transmitter (TX) part of the PRI cable.
Blue Alarm indicates that the received frames are not synchronized properly.
No LEDs light-up indicates that layer one framing is working (right protocol like for
example EURO ISDN selected). However there is a problem at layer 2 caused by for
example a CRC4 configuration mismatch.
BRI Status
The picture below shows the status page of a BRI version of the gateway.
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