From: heller@deepsoft.com   
      
   At Mon, 23 Jun 2014 00:32:43 -0400 Calvin Henry-Cotnam  wrote:   
      
   >   
   > Stephen Sprunk (stephen@sprunk.org) said...   
   > >   
   > >Why would you want to   
   > >use a modem over a VoIP line anyway?  If you already have IP access,   
   > >then just send the data via IP.   
   >   
   > For the simple reason that the equipment being used is not IP-equipped.   
   >   
   > I do some freelance software work for a small company that produces a   
   > telemetry system that gathers data for companies that sell gasses (oxygen,   
   > nitrogen, CO2, argon, etc) and their units that sit at the gas users'   
   > sites use a modem connection to dial out or receive dial-in polling.   
   >   
   > Perhaps a future version of the unit might be ethernet ready, but that   
   > is not in the forseeable future. I suspect there are other situations   
   > such as this out there.   
      
   Building fire alarm systems *still* use analog modems to automagically dial   
   911 (actually they make a modem connection to a central dispatcher who in turn   
   dials 911). These systems *must* be connected to a dedicated analog (copper)   
   phone line.  In some cases, they need *two* analog phone lines, with the   
   second line being a backup.   
      
   >   
      
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   Robert Heller             -- 978-544-6933 / heller@deepsoft.com   
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