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Hardware puzzel: Recording modem sounds

I'll start off by stating that this may be in the wrong forum -- it seems that it belongs somewhere between here and the hardware area.... Forgive me if you feel that it belongs elsewhere.

Anyway, when files are sent across phone lines via a modem, they are first converted into sounds by the modem. I would like to capture the sounds onto an audio tape. In essence what I am wishing to do is connect a tape recorder to my modem and have the modem send the file to the tape recorder. I would also like to be able to do the reverse process.

So far, I have spliced telephone cable with an RJ-11 to a cable with an audio in connector. The problem I am now running into is getting the modem to send a file with no dial tone or handshaking occurring. I've looked at some of the AT commands that can be used in hyperterminal, but so far I have not had any luck.

Anyone ever played with this before?

Thanks.

MusicMan

Three questions ...
1. Are you using an internal or external modem?
2. If internal - what OS are you using?
3. Do you need to record the actual transmission sounds, or will a sound effects file be any good?

Arawn

You might want to try this in the Hardware forum. They will probably have people who have attempted such a thing before.

Zadel

ASKER

MusicMan,
1. It is an internal modem
2. Windows 98
3. Yes, I am wanting the actual transmission sounds. Theoretically, if this is done properly, I should then be able to conduct the process in reverse and regain the file.

Arawn,
I believe that I shall take your suggestion and post this question there as well.

Thanks.

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MusicMan

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chicagoan

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rid

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chicagoan

You don't need a dial tone
http://www.jagshouse.com/modem.html

Something like procomm will allow you to enter at commands and transfer files via xmodem

chicagoan

and if you're not so handy with a soldering iron:

http://www.telephonetribute.com/images/teltone/sandman.gif
http://www.testequipmentdepot.com/skutch/computeracc/as4.htm

themr2man

you can always hit record after you hear the dial tone! :p

rami_halim

i believe to reverse the process it might be impossible .. cuz if you convert the signal to audio, some frequencies will be outside the audible range and probably outside the tape recorder range..

Zadel

ASKER

I haven't worked with this in some time, but I would still be very interested in getthing this to work. Just seems like something that would be fun to do.

Anyway, none of the things have worked for me yet. However, if we need to go ahead and grant the points, I do not have objections to the recommendation.