#!/bin/sh## Playback a messages list through the modem.#TTYS=ttyS0VMCP="/usr/bin/vmcp -g -d$TTYS"# Reset the serial line to raw, the modem to factory defaults.$VMCP -z38400 -t8 -c"AT&F1" -wOK# If needed, set some values:#  - CD on remote carrier#  - Hangup and return to command mode on DTR switch#  - Set RTS/CTS hardware flow control# $VMCP -c"AT&C1&D2&K3" -wOK# Slect voice mode.$VMCP -c"AT#CLS=8" -wOK# Bits per sample.$VMCP -c"AT#VBS=4" -wOK# Slect baud rate (n*2400).$VMCP -c"AT#BDR=16" -wOK# Enable silence deletion.$VMCP -c"AT#VSD=1" -wOK# Voice line select: generally 1 is handset, 2 is speaker.$VMCP -c"AT#VLS=2" -wVCONfor FILE in $*; do   if [ -f $FILE ]; then      # Voice transmit.      $VMCP -c"AT#VTX" -wCONNECT      # Send voice data.      echo Playing $FILE...      $VMCP -k -e -q -t120 -i$FILE      # Send end of data mark: <DLE><ETX> chars.      $VMCP -c"\c\020\003" -wVCON   fidone# Hang-up.$VMCP -c"ATH" -wOK