XPost: sci.electronics.repair   
   From: yano@shaw.ca   
      
   Joy wrote:   
   > Does anyone know where I could buy a cheap DTMF tone generator?   
   > I think that's what they are called. They used to be used to enter touch   
   > tone phone sounds into the receivers of dial pay phones so you could   
   > access your answering machine.   
   >   
   > I know someone who only has rotary phones (she claims they are the only   
   > ones that work with her hearing aids) and is moving to a place where the   
   > main door can be remotely opened by pressing a key on her phone. Since   
   > she doesn't have a touch tone phone, I thought a portable tone generator   
   > might work.  Radio Shack doesn't carry them and I don't know where else   
   > to look.   
   >   
   > Yes, I could always hook up a small, touch tone phone next to her dial   
   > phone but then she couldn't easily move it between phones. Maybe a cheap   
   > cordless phone would work. Those I have.   
   >   
   > Does anyone know where I could get a tiny wired phone? I had once once   
   > (Radio Shack) and it was 2 x 1.5 x .75 inches with a 2.5 mm plug for a   
   > mic/headset just like those used on cordless and wireless phones. It   
   > even had "to line" and "to telephone" jacks.   
   >   
   > Thanks for any leads or even the right search keywords on ebay. I didn't   
   > find any with my searches.   
   >   
   > And sorry if these aren't appropriate newsgroups. I thought people here   
   > would know about this stuff!   
   >   
   > Thanks!  Joy   
     I don't know why you must "Acoustically couple" into this private   
   network . Since this is a "Private Line" a "Y" connector could   
   "Parallel" a "Touchtone phone" with the rotary dial phone and be picked   
   up to input a TT tone onto the line. The acoustic coupling was a   
   workaround to patch "TT" signals onto a "Public Dialup Line. These   
   acoustically patched  generators no longer make any sense when ALL phone   
   lines will now accept "TT"tones Phones!   
      
   Yukio YANO   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)