Mobile controlled Robot

hi romel_emperado

but the phone you are calling need to answer your call for you to send a DTMF? what if the one you are calling is not answering your call, can u still send a DTMF?

in this type of projects normally that set is used that has an option of auto attend call set auto attend call option after that start demo of it
without call attending dtmf can not be received i think can be sent but not received
u can check it call anyone on mobile during calling press any key if u fina a tone it mean it is sending but receiver only receive when he attend the call

thanks majoka. i did try sending it withour attending the call and it was not received..

now it is very clear to me now with this DTMF method... thanks..