1 troubleshooting – 2N BRI Lite/Enterprise v1.8 User Manual
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8.1 Troubleshooting
For the most frequently asked questions refer to
.
No LED is shining on
.
2N BRI Enterprise / BRI Lite
®
2N BRI Enterprise / BRI Lite
®
is disconnected from the power supply.
fails to log in to the GSM network.
2N BRI Enterprise / BRI Lite
®
Check the SIM card.
Check the PIN.
Check the antenna connection.
Select a place with a good GSM signal.
When I make outgoing call thru the GW, the call is rejected by the gateway.
What may cause it?
The communication protocol on the line from your PbX to the gateway is
set to Euro ISDN DSS1 according to Q.931
The SIM cards are logged to the network correctly – both LEDs called GSM1
and GSM2 must be off (they are blinking during logging process, but they
go off after they are logged successfully)
You see good signal strength in the Diagnostics (between −60dB and 80
−
dB)
The SIM cards are active, they have credit, they are not blocked by the
GSM operator
If you are using CLIR function Enabled in the gateway, check if this feature
is enabled in the SIM card by the GSM operator
The dialed number is in correct format, it matches one of the Network Lists
and this Network List is Actively used in the LCR section
If you have set Max. number of called minutes, make sure those minutes
have not been already used up.
The Time limitation of SIM card (which part of the day it shall be used) is
set correctly
Time and Date is set correctly in the Gateway
Call is not disconnected immediately
Call release in GSM network can take up to 2 s. If you are experimenting
longer delay it can be caused by gateway or by PBX settings. Usually the
connection stays active because of simulation of analogue line. If call is
disconnected in analogue line you can hear busy tone. This is not typical
anymore in ISDN networks but you can simulate this behaviour and
generate busy tone up to 30 s.
On gateway side you can set following:
If call stays up when call is disconnected from GSM side. Go to ISDN parameters and
set Busy tone on None. (This is turning off busy tone generation from gateway.)
If call stays up when call is disconnected from PBX side. Go to GSM Basic parameters
and set Busy tone on None. (This is turning off busy tone generation from gateway). If
call is not cut after this settings set this parameter on Disabled. (If PBX requests to
keep line active in disconnection message then gateway will ignore this request and the
call will be ended)