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7. Repeat the above step to configure the interface type for
voice/fax channel 2.
8. The Voice/Fax tab displays the parameters for the voice
gain, DTMF (Dual Tone Multi-Frequency) gain, voice
coder, faxing, and advanced features such as Silence
Compression, Echo Cancellation, and Forward Error
Correction.
9. You can set up the input and output voice gain so that the
volume can be increased or decreased. Input gain
modifies the level of the audio coming in to the voice
channel before it is sent over the Internet to the remote
MultiVOIP 200; and, output gain modifies the level of the
audio being output to the device attached to the voice
channel. Make your selections from the Input and Output
drop-down lists in the Voice Gain group. The valid range
is +31dB to –31dB with a recommended/default value of 0.
You can also set up the DTMF gain (or output level in
decibels - dB) for the higher and lower frequency groups of
the DTMF tone pair. Make your selections in the drop-
Configuring MultiVOIP Slaves
53
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