Since the days of experimentation using a standard
telephone line are almost
over, many of todays curious tech 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 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 (30
cm 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 30
cm 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
acoustic
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.
* 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.
shouts out to:
Phantasm on
UnAuThOrIsEd AcCeSs BBS...he's the mofo that came
up with this :0)
it's also available at
phreak.org, and may have been in an issue of
phrack...