using 555 timer

[waqar]

Is there any schematic avaiable on the net or can any one please guide me how to use 555 IC for the following purpose

1) Telephone Dial Tone Generation

2) Busy Tone

3) Ring Back Tone

using one IC only

 

[Chippie]

Is there any schematic avaiable on the net or can any one please guide me how to use 555 IC for the following purpose

1) Telephone Dial Tone Generation

2) Busy Tone

3) Ring Back Tone

using one IC only

Have you tried searching for a schematic?

 

[waqar]

its not there on search..if u have any links then please guide me..

 

[thebigbasicq]

WAQAR....

That sure is a strange name. Not a 'handle' I have heard of.