Dialogic 6.2 - Manual (Page 168)

voice
November 2009 168
Pressing the following keys on the telephone keypad affect the speed
and volume at which the application plays back speech:
1 = increases the gain
2 = decreases the gain
3 = increases the speed
4 = decreases the speed
Bfv API debug mode is turned on.
The btcall.cfg file is the user configuration file. The voice program is
found in the app.src directory.
Command Syntax
voice [options]
Not all coding formats and rate combinations are available on all
products.
Requires one -p or -r argument.
Arguments
-c
Call given number, else wait for ring.
-f
Specify record coding format; use the number of
the format or one of the following names. If there
is no number specified, you must use the name.
adpcm
adpcm32
adpcm24
pcm_ulaw
pcm_ulaw64
pcm_ulaw48
pcm_ulaw88
pcm_alaw
pcm_alaw64
pcm_alaw48
pcm_alaw88
1
2
3
Name of the file to play or record.
-l
Loop forever, sending or receiving.
-n
Specify recording time in seconds.
-p
Play.
-r
Record (default 10 seconds).
-u
Use specified channel.