DTMF not working on outdial


I have installed asterisk-1.6 i’m making an outdial call using .call file and recording the profile of the caller the problem is that it is not accepting the digit from every phone it’s [b]accepting it from few phones but not specially from old mobile phones like

  • Nokia 1100
  • Nokia 6030
    where as when they dial the number mean to say that on incoming call it accepts successfully where as not on outdial.[/b]
    If someone can really help on this i will be very thankful to you.