15
Fig. 11 - Basic ISDN GSM Gateway Wiring Diagram
Choose the specific wiring as shown in Section 4.
2.9.
Status Indicators
There is a panel with five LEDs on the gateway upper cover
for a quick GSM gateway status detection (see Fig. 12).
The
Power
LED signals that the gateway as a whole is
in operation. The
BRI 1
and
BRI 2
LEDs indicate the status of both the B channels
of
the
basic
ISDN
extension,
and
the
GSM 1
and
GSM 2
LEDs indicate the status of the respective GSM modules.
Fig. 12 - Signalling LEDs
Basic diagnostic tests and gateway initialisation are performed automatically
whenever the gateway is connected to supply voltage. Each test step is signalled
by a specific colour combination of the LEDs. If a test step fails, the indicator
combination
related
to
the
failed
test
remains
lighted.
This provides a convenient troubleshooting tool to the technical support
personnel.
Note: BRI Lite contain only
one BRI ISDN interface. You
can connect only one type of
opposite equipment (e.g.
PBX or ISDN phone)
ISDN equipmnet (TE)
CH1
CH2
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