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Ever wanted to reuse those old telephones and or modems using just two wires. This instructable shows you several options. Get a continuity tester to ...
This first circuit if you just want to use a battery. For short distances use the nine volt battery for compactness.
This circuit is for using a wallwart. Better for a more permanent setup. Originally I intended to use coax but any 2 line wire will do.
This is for a more permenant circiut and with buzzer. As soon as you pick up the phone the buzzer should sound. Thanx to Markus Wandel. Markus Wande...
Coax: hard to connect to, but cheap. We were going to use the in wall cabling for the tv, but I want to make sure nothing is connected. Did disconnect...
If you are going to use cat 5 network cable. I strongly recommend making a breakout jig. Of course I would recommend that for any cabling project.
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Posted:Apr 8, 2012
How to make an Intercom using telephone cables
How to connect two phones at home for an intercom or for children amusement
Hack a VOIP Box Into a Telephone Intercom
Cisco Console to Null Modem Serial Adapter
Old Phone Intercom Device
Let's get wired.
Connecting a Telephone to Your Soundcard
Setting up Apple AirPort Wireless Router
How to Wire Your House With Cat-5 (or 6) For Ethernet Networking
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