21
Software Installation
15. 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.
16. 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.
17. 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.
