2N BRI Lite/Enterprise v1.8 User Manual

Page 63

Calls

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.
Timeout for ringing to GSM [s] –

ringing timeout for outgoing calls to GSM. If not

answered or terminated within this timeout, the call will be terminated
automatically by the gateway when this timeout elapses.

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 message detector settings

Minimum percent to match – set the match percentage range in which the voice
message is detected as identical with one of the voice messages recorded in the

section under index 30 - 37. The

Gateway control / Voice messages
recommended value is 70-90%.

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.

Output audio level DSP [dB] – audio volume gain/loss to VoIP
Input audio level DSP [dB] – audio volume gain/loss to GSM

Caution

An extremely high voice level may lead to poor voice quality (distortion,
echo, etc.) and wrong DTMF detection!