In some countries layer 2 can be down when there is no
activity (ongoing connections).
However, layer 2 should become active once a call is
made or received.

BRI hardware status indication

The screenshot shows the status page of a BRI version of the
3G Gateway. The BRI status displays the conditions of ISDN
layer 1 and 2 separately. Green indicates up and in sync. Red
indicates not in sync and indicate probably a disconnected
ISDN line.
Besides the indications on the webpage each ISDN BRI
interface located at the back-side of the 3G Gateway has a
green and orange LED. The meanings of these LEDs are:

•

Green

: Layer 1 of the ISDN signalling is up.

•

Green and Orange

. This indicates that both layers 1 and

2 are up. In some countries the orange LED can blink on a
regular interval, or is turned on when there is an active call.

•

No LED’s illuminate

. This indicates that there is no

connection or a wrongly wired connection.

Select

ISDN/BRI Status

to access the

ISDN/BRI Status

pane.

ISDN/BRI Status (BRI Versions only)

In case the BRI 3G Gateway is connected with less than
4 BRI lines, the BRI interfaces with the highest number(s)
should be left open. For example when only 2 ISDN lines
are used they should be connected with interface 1 and 2.