[SGVLUG] analog (stored as PCM digital) to binary digital

[David Lawyer]

Heres a question someone sent me that I can't answer.  Anyone know of
a computer program that does this?  Apparently he recorded analog data
by tapping into a modem line and stored it digitally via pcm (pulse code
modulation).  Now he wants to convert this digitally stored analog
data back to digital, with the conversion back to digital being the
demodulation of amplitude-phase modulation used by modems.

So it should be possible to make this digital-analog-digital
transformation without any analog step by doing a digital to digital
conversion.  I guess this is what an ISP does via a remote access
server (digital modem).  It coverts digital code from a T1 line (that
originated from an analog modem) to the binary (hex) data sent by the
modem.  So what he wants is a digital modem in software.

			David Lawyer

   Hi Dave

   I found your web document that explain many things about modem.

   I would like to know if there is an easy way to decode a PCM file into
   hex data.

   I recorded a modem handshake + some data going thru the line(pcm file),
   and now I would like to decode the file into HEX data.

   I think I could do it by injecting the pcm file back into a modem to
   get the data demodulated, but I'm not sure how to do it.

   any advice.....

   Regards