Step 1: Gathering the parts
1: Corded phone (MUST BE WORKING!!!!!!!)
2: Corded phone base
3: Phone wire (preferably the one that came with the corded phone) (must have 4 wires)
4: Old head phone (it doesn’t matter if the ear buds are gone, you only need the plug in)
5: Old mic wire with plug
6: Screw driver (duh)
7: Soldering iron
9: Wall plug-in for phone base (optional, used in step four)
10: Glue gun
11: Solder sucker (for removing solder, this is not needed but it helps)
Step 2: Disassembling the corded phone base
Step 3: Soldering wires
Step 4: Converter case (optional)
To make a case for the converter, simply take the plug in for the corded phone base and open it up as shown in the image below. You may need to use a screw driver to pry it apart. Next, remove all loose components and snap or cut the wires connected to the wall plug-in. De-solder the plug prongs from the case and remove them. Then cut, burn, drill or grind a hole in the side of the case so that the phone jack plug-in can be glued behind the hole to allow the phone wire to be plugged in from the outside of the case. Finally, run the wires that go to the mic and sound jack plug-ins through the plug prong holes. You may need to further cut, burn, drill or grind to enlarge the holes so the wires will fit.
Step 5: Testing the phone
Step 6: Trouble Shooting
Solution: Open up the phone try and wiring directly from the mic to the computer; without the converter in between. You don’t have to solder the wires to the mic, just hold them on to test it. If the mic works then the problem is elsewhere. So you should try using a different wire to connect the phone to the jack (although it still has to have 4 wires). If it is still not working, check all your soldering and make sure that no wires are touching and that all wires are secure.
Problem: The speaker is not working.
Solution: Same as above, where it says mic replace with speaker.
Problem: The mic and speaker work but they are not good quality.
Solution: Open up the phone and replace the mic and or speaker with new better ones.
Problem: None of the above.
Solution: Leave a comment with your problem and I will try to post the solution.