asterisk users - Feb 2005 - Play tone till first digit read

I'd like to collect digits (either a fixed number of digits or a variable 
number ended by a pound sign.  Read() is perfect. Authenticate is pretty 
good too.

What I need is to prompt, not with a recording, but by playing a tone that 
will terminate at the receipt of the first digit, sort of like dial tone. 
In fact, it could BE dial tone.

Anybody know how to do this?

Ed Greenberg wrote:
> What I need is to prompt, not with a recording, but by playing a tone 
> that will terminate at the receipt of the first digit, sort of like 
> dial tone. In fact, it could BE dial tone.
Why not just use a recording of your prompt tone and let Read do it for 
you?  It will stop when the first digit has been dialed.  Just set the 
timeout to something very short and make the recording as long as you 
want to wait.