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VIP User’s Manual
Command Line Interface
58
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, VIP’s PCM codec is de-
signed in such a way that users might adjust it gain level before transmitting analog signal to the lo-
cal loop. The tel set pcm_gain_level 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 VIP 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