COM AT+VTS: tone generation
COM AT+VTD: DTMF tone duration
COM
COM Used variables:
COM <DA4> Destination address: own conventional phone number 
COM
COM Version History:
COM Version 1.0   24.11.2003   R. Weiden	started, with adaption for model C62
COM Version 1.1   09.12.2003   R. Weiden        adapted to R65 platform, added AT+VTD command
COM Version 1.2   21.12.2004   T. Kleinmann     added write command with tone AND duration parameter AT+VTS=<dtmf>,<duration>
COM ------------------------------------------------------------------------------------------------------------------------------

from attglobals import *

COM tone generation
AT+VTS=?
WAIT FOR OK

AT+VTD=?
WAIT FOR OK

COM Dial lokal phone
ATD <DA4>;
MESSAGE Answer phone, when ringing, and press OK. Then listen to DTMF tones and check if they sound ok... :-)

COM -------------------------------------------------------------------------------------------------------------
COM Send all DTMF tones
AT+VTS="1"
WAIT FOR OK
AT+VTS="2"
WAIT FOR OK
AT+VTS="3"
WAIT FOR OK
AT+VTS="4"
WAIT FOR OK
AT+VTS="5"
WAIT FOR OK
AT+VTS="6"
WAIT FOR OK
AT+VTS="7"
WAIT FOR OK
AT+VTS="8"
WAIT FOR OK
AT+VTS="9"
WAIT FOR OK
AT+VTS="A"
WAIT FOR OK
AT+VTS="B"
WAIT FOR OK
AT+VTS="C"
WAIT FOR OK
AT+VTS="D"
WAIT FOR OK
AT+VTS="#"
WAIT FOR OK
AT+VTS="*"
WAIT FOR OK

COM -------------------------------------------------------------------------------------------------------------
COM AT+VTD: tone duration
AT+VTD=20
WAIT FOR OK
COM verify
AT+VTD?
WAIT FOR 20
AT+VTS="8"
WAIT FOR OK
COM set to 100
AT+VTD=100
WAIT FOR OK
COM verify
AT+VTD?
WAIT FOR 100
AT+VTS="8"
WAIT FOR OK
COM set to 255
AT+VTD=255
WAIT FOR OK
COM verify
AT+VTD?
WAIT FOR 255
COM set to 1
AT+VTD=1
WAIT FOR OK
COM verify
AT+VTD?
WAIT FOR 1
AT+VTS="8"
WAIT FOR OK
AT+VTS="8",100
WAIT FOR OK

MESSAGE Please hang up phone...
ATH
WAIT FOR OK

COM -------------------------------------------------------------------------------------------------------------
COM check illegal values
AT+VTD=0
WAIT FOR ERROR
AT+VTD=256
WAIT FOR ERROR
