nipun
Member level 2
need help
i soldered a circuit for dtmf to bcd convertor using CM8870.it works fine with landline telephone.i want to use it with a cellphone.it isnt working with cellphone.i cut the wire to speaker of handsfree of a mobile and connected to the input of ic.still its not working.i intend to use it as a remote control by calling the mobile with another mobile.plz help ,its urgent.
i soldered a circuit for dtmf to bcd convertor using CM8870.it works fine with landline telephone.i want to use it with a cellphone.it isnt working with cellphone.i cut the wire to speaker of handsfree of a mobile and connected to the input of ic.still its not working.i intend to use it as a remote control by calling the mobile with another mobile.plz help ,its urgent.