2N VoiceBlue Next v3.0 - Manual (Page 18)

Before You Start 2.1
18
Caution
 A GSM gateway with an expired licence cannot process any incoming
and/or outgoing calls! To avoid this, ask your dealer for licence
prolongation or an unlimited licence!
GSM/UMTS Network Restriction
Some 2N ® VoiceBlue Next types may be restricted to certain GSM/UMTS networks
only. If so, the red indicator at the given GSM/UMTS module is on and the „netw-err‟
cause is detected. Contact your dealer please for more information.
Tip
 Contact your dealer please for more information.
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 -80dBm. If lower, change the antenna position or type!
 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 Relax delay parameter to 2
seconds (refer to the GSM Basic Parameters subsection, p. 39). If the
GSM 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.