vrec

控制语音Modem的程序

#!/bin/sh
# 
# Record a message from the modem to a file.
#

TTYS=ttyS0
VMCP="/usr/bin/vmcp -g -d$TTYS"

if [ $# = 1 ]; then

   # Reset the serial line to raw, the modem to factory defaults.
   $VMCP -z38400 -t8 -c"AT&F1" -wOK

   # If needed, set some values:
   #  - Modem sets CD line on remote carrier
   #  - Modem hangs up and return to command mode on DTR switch
   #  - Enable RTS/CTS hardware flow control
   # $VMCP -c"AT&C1&D2&K3" -wOK

   # Select voice mode.
   $VMCP -c"AT#CLS=8" -wOK

   # Bits per sample.
   $VMCP -c"AT#VBS=4" -wOK

   # Timeout if off-hook and no data, or if non zero BDR and no data.
   $VMCP -c"ATS30=60" -wOK

   # Slect baud rate (n*2400).
   $VMCP -c"AT#BDR=16" -wOK

   # Silence detection period (n*100 ms).
   $VMCP -c"AT#VSP=20" -wOK

   # Silence detection tuner (1 quiet lines, 2 midrange, 3 noisy lines).
   $VMCP -c"AT#VSS=2" -wOK

   # Enable silence deletion.
   $VMCP -c"AT#VSD=1" -wOK

   # Voice line select for a beep: generally 1 is handset, 2 is speaker.
   $VMCP -c"AT#VLS=2" -wVCON
   # Set beep timer (5/10 of s) and beep a tone.
   $VMCP -c"AT#VBT=5#VTS=#" -wOK

   # Voice line select for recording: generally 1 is handset, 3 is microphone.
   $VMCP -c"AT#VLS=3" -wVCON

   # Voice receive capturing data to file (skip CONNECT 0Dh 0Ah string).
   # Exit on keypress, timeout, <DLE><q> or <DLE><s>.
   $VMCP -c"AT#VRX" -W"\cCONNECT\r\n" -k -e -t120 -o$1 -xqs

   # Stop voice receive sending a single LF char.
   $VMCP -c"\c\n" -wVCON

   # Hang-up.
   $VMCP -c"ATH" -wOK
fi