3.3. Potential GSM Network Problems
The VoiceBlue Lite GSM gateway is designed for a continuous
100% load. The GSM network may cause the following problems:
•
The GSM module(s) cannot log in, log in slowly or log out
occasionally. This might be caused by any of the events below:
•
The signal intensity received from the GSM network is too
weak – the recommended minimum value is
-80dBm
. If
the signal is lower, change the antenna position or type.
•
The GSM cell to which the GSM modules log in is
overloaded. Change the antenna position, or reduce the
number of GSM channels connected to the troubled GSM
network.
•
One of the GSM modules keeps logged out or is unable to
process an outgoing call – this indicates a potential GSM
network overload on the installation site. To solve this
problem, set the parameter “
Relax delay”
= 2. If a GSM
module fails to log in or refuses to process a GSM call even
after the gateway restart, check your GSM network provider
for potential SIM card or GSM module blocking.
26
VoIPon www.voipon.co.uk [email protected] Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
Содержание VoiceBlue Lite
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