Sending number in DTMF tone after a dial


I use win-tel for my long distance, for that I have to call a local number here, then after the tone dial my long distance number.

I was planing to use asterisk to do all the stuff for me but I don’t know how :frowning:

I read abour ‘w’ in the dial string to make it wait the add another number but I have no security if the first number work.
I read somewhere that Asterisk can send DTMF tones ?

Some people seems to use callingcard for long distance this way.

I will like some help.

I use TDM11B with Zap to connect to my local telephone line.