Potential gsm/umts troubles – 2N BRI Lite/Enterprise v1.6 User Manual
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LED Indicators
Power
supply
green light – mains powered
– device switched off
no light
GSM/UMTS
network
green light – call in progress
– error
red light
– network registration, SMS
green flashing
– module restart
red flashing
– signal intensity indication
Red/green flashing
ISDN port
green light – 2 calls in progress
– ISDN synchronisation/active call
green flashing
– ISDN disconnected
red light
– synchronisation of lower ISDN layers
red flashing
Ethernet
port
green light
– disconnected
+ no orange light
– 100BaseT connected, in
green light + orange flashing
operation
no green light + orange light – 10baseT connected, no operation
green flashing + orange flashing – 10BaseT connection, in
operation
Signal
intensity
Signal intensity indication:one segment = less than 109dbmtwo
−
segments = more than 95dbmthree segments = more than 8
−
−
1dbmfour segments = more than 65dbm
−
* If the devices have been interconnected, the layers will not be connected until the
first call.
**Remember to set the signal intensity indication in the gateway configuration menu.
Potential GSM/UMTS Troubles
All
gateways work reliably under a long-time full load. The following
2N GSM
®
problems may be caused by GSM/UMTS networks:
The GSM/UMTS module(s) cannot log in, log in slowly, or log out occasionally.
This problem may be caused by any of the following situations:
The GSM/UMTS signal is low. The minimum signal level should be
approximately
. If lower, change the antenna position or type!
80dBm
−
The GSM/UMTS cell (BTS) to which the GSM/UMTS modules are trying to
log in is overloaded. Change the antenna position or reduce the count of
the logged-in GSM/UMTS modules.
One of the GSM/UMTS modules is permanently logged-out or fails to make
outgoing calls:
The problem indicates a GSM/UMTS network overload on the installation
site. To eliminate the problem, set the
parameter to
Relax delay
2
. If the GSM module fails to log in or rejects to make outgoing
seconds
GSM calls even after the gateway restart, consult your GSM provider for
your SIM card/GSM module availability.
The manufacturer shall not be held liable for any SIM card or provider service
unavailability in the case of a breach of the provider's SIM terms and conditions for the
SIM card use.