Multi-Tech Systems MVP200 - Manual (Page 33)

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Configure Client MultiVOIPs
7. Repeat the above steps to configure the interface type for
each voice/fax channel.
The Voice/Fax tab displays the parameters for the voice
coder, faxing, and DTMF gain.
8. To change the voice coder, select the channel from the
Select Channel list, then select the new voice coder entry
from the Voice Coder list.
If you changed the voice coder, ensure that the same
voice coder is used on the voice/fax channel you are
calling. Otherwise, you will always get a busy signal.
9. If you selected the FXO interface and are using touchtone
dialing, you can 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 from the lists in
the DTMF Gain group. In the Duration box, enter the
DTMF tone duration in milliseconds. 100 is entered by
default.
Note: Only change the DTMF gain under the direction of
Multi-Tech Technical Support.
10. The Fax group enables you to send and receive faxes on
the selected voice/fax channel. You can select the