2N VoiceBlue Next v3.5 - Manual (Page 14)

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2N TELEKOMUNIKACE a.s., www.2n.cz
®
Potential GSM/UMTS Troubles
All 2N GSM gateways work reliably under a long-time full load. The following problems
may be caused by GSM/UMTS networks:
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
(refer to the subsection). If the GSM seconds GSM Basic Parameters
module fails to log in or rejects to make outgoing 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.