2N BRI Lite/Enterprise v1.1 - Manual (Page 68)

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 Relax timeout [s] – set the timeout between the end of the last call and
beginning of the next call made via one and the same GSM module (incoming
and outgoing calls are rejected during this timeout). The recommended relax
value is 2 seconds – please do not change this setting unless absolutely
necessary.
Holiday list
List of days on which calls will be routed like on weekends in the LCR.
DTMF settings
Minimum delay between two identical DTMF characters [s/100] received.
Tone detector settings
The GSM gateway can automatically detect user defined tones transmitted by
GSM/UMTS for setting up outgoing calls to the GSM/UMTS networks. In general, they
are tones of a transferred number. For the purpose of such detection, the GSM
gateway automatically terminates the call and tries to set it up via another available
outgoing group (if defined in the LCR).
 Frequency 1;2;3;4 – define the frequencies for the tone to be detected.
 Sequence list – set the sequence of the tones to be detected.
Voice parameters of GSM modules
Set the voice level in the gateway GSM modules.
Audio level DSP
Set the voice level for calls in the gateway signal processor.
Caution
 An extremely high voice level may lead to poor voice quality (distortion,
echo, etc.) and wrong DTMF detection!
Tone generated for incoming calls from GSM/UMTS
 Dial tone – set the dial tone for incoming calls from GSM/UMTS.
 Ring tone – set the ring tone for incoming calls from GSM/UMTS.
 Generate busy tone to GSM/UMTS - enable busy tone generation for call
termination.
Caution
 If the Generate busy tone function is enabled, the duration of outgoing
calls billed by the GSM/UMTS provider will be extended!
Error GSM/UMTS causes
 Set the ISDN release cause for each of the below mentioned statuses. Every
call that meets any of the below mentioned requirements, will be rejected
with a user defined cause (the ISDN cause number will be translated to VoIP
as a SIP code as defined below).