Eusso 2 & 4 Port VoIP Gateway, Руководство пользователя, Страница: 91 / 112

ITG User’s Guide
tel set pcm_gain_level {1|2|3|4|5}
The FXO ports might be connected to central office switch or PBX via local loop which may
of as long as several miles. For compensating signal distortion in the local loop, the ITG’s
PCM codec is designed in such a way that users might adjust its gain level before
transmitting analog signal to the local loop. The
tel set pcm_gain_leve l command is used to
set the gain level for the PCM codec for compensating signal loss in the local loop.
Syntax Description
1 Set gain level to –1 dB
2 Set gain level to 0 dB
3
Set gain level to +1 dB
4 Set gain level to +2 dB
5
Set gain level to +3 dB
Default
The default setting is -1 dB.
Note
The PCM gain level setting is only meaningful to FXO ports. It is not applicable to FXS
ports.
tel set ring_freq {1|2|3|4}
Use the tel set ring_freq command to set the frequency of the ringer ITG uses to ring a FXS
port.
Syntax Description
1
Set ring freq to 17 Hz
2 Set ring freq to 20 Hz
3 Set ring freq to 25 Hz
4 Set ring freq to 50 Hz
Command Line Interface
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