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- UnAuThOrIsEd AcCeSs +44(0)1636-613949 24hrs "information with attitude"
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- <> <>
- <> How to connect any cellular phone to a modem <>
- <> <>
- <> By Phantasm <>
- <> <>
- <> UnAuThOrIsEd AcCeSs [PRIVATE] <>
- <> +44(0)1636-613949 <>
- <> <>
- <> Release Date: 8th/July/1995 <>
- <> <>
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-
- * Introduction:
-
- Since the days of hacking using a standard telephone line are almost over,
- many of todays hacker community are moving towards cellular communications.
-
- ESN/MIN pairs are no longer difficult to obtain and if used carefully will
- last much longer than calling cards, codes and most other methods of phone
- phreaking.
-
- This text file will explain how to easily connect any cellular phone to a
- modem, without the expense of buying a cellular line interface or
- similar device.
-
- * What you will require:
-
- To undertake this project you will require the following;
-
- 1 desktop telephone
- 1 telephone doubler socket
- 4 lengths of wire (30cm long)
- 1 roll of solder
- 1 roll of masking tape
-
- You will also require a soldering iron, wire strippers and a screw driver.
-
- * Instructions:
-
- 1. Unscrew the screws holding your desktop telephone handset together. Remove
- the ear piece speaker and microphone from the plastic moulding and cut
- the wires connected to them.
-
- 2. Now solder the 30cm long lengths of wire onto the existing handset ear
- piece speaker and microphone wires. Once you have done this, simply re-solder
- the ear piece speaker and microphone onto the extended handset wiring.
-
- 3. Place the extended handset ear piece speaker over the mouth piece on your
- cellular telephone and wrap in masking tape. This will not only hold the
- extended handset ear piece speaker in position, but also prevent background
- noise problems.
-
- 4. Now place the extended handset microphone over the ear piece on your
- cellular telephone and wrap in masking tape as above.
-
- * How to use the device:
-
- Basically, what you have done is turned your desktop telephone into an
- accoustic coupler type device. To use the device, simply follow the
- instructions below.
-
- 1. Plug your telephone doubler socket into your telephone socket. Plug
- your desktop telephone into one socket and your modem line into the other
- socket.
-
- 2. Leave your telephone handset off the hook until your line is completely
- dead. (i.e. after you have listened to "please replace the handset and try
- again" or something similar about 10 times.
-
- 3. Dial the modem dialup you wish to call on your cellular phone and
- press SEND as you would normally.
-
- 4. Type ATD into your terminal package and press return. Your modem should
- now be off the hook and waiting for a carrier signal from your cellular
- telephone.
-
- * Diagram of device:
- __
- : :
- : :
- ________:__:_
- ______ : :
- / : /:: ::::: :
- / :---+ +--------------: :: ::::::: : ear piece
- / :-+ : : +------------: :: ::::: :
- : ____: : : : : \:: _________ :
- : / : : : : : : : :
- : : : : : : : :_________: :
- : : : : : : : :
- : : : +-- : : ---------+ : [1][2][3] :
- : : +---- : : -------+ : : [4][5][6] :
- : : : : : : : [7][8][9] :
- : : : : : : : [*][0][#] :
- : : : : : : : _ _ _ :
- : \____ : : : : : [_][_][_] :
- : : : : : : /:: :
- \ :-------+ : : +-: :: ::: : microphone
- \ :---------+ +---: :: ::: :
- \______: \:: :
- : :_____________:
- :
- : cellular telephone
- :
-
- desktop telephone
- handset
-
- * How it works:
-
- The carrier signal from the remote modem will be sent out of your cellular
- telephone ear piece speaker and into the desktop telephone handset
- microphone. Your modem will receive any data send into the desktop telephone
- handset after the ATD (off-hook) command has been issued.
-
- In the same way, any carrier signals from your modem will be sent out of the
- desktop telephone handset earpiece speaker and into your cellular telephone
- microphone.
-
- At the time of writing, I have not connected at speeds higher than 1200 baud
- due to the low quality of anologue cellular network telephone lines. I would
- expect that those using transportable cellular phones (such as the Motorola
- 4800 and 6800 series) should have no problems connecting at 2400 baud or
- higher.
-
- I did not write this text file so that people could use it to transfer large
- amounts of data at high speed. This is simply a guide to explain how easy
- it is to use any cellular telephone with a modem. 1200 baud may be slow,
- but it is fine for hacking, calling your favourite underground BBS or
- transfering text files --- especially if you are not paying for it!
-
- If anyone has any suggestions or comments, leave feedback to 'Phantasm'
- on UnAuThOrIsEd AcCeSs BBS.
-
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