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Chat Online with Cordless Phone
buckymatters writes "Christoffer Järnåker has converted an old home phone to be used with Skype, MSN voice chat or other similar software. Using the 'highly scientific method Trial and Error' he uncovered the input and output of the phone, wired it up and began talking 300 meters away from his computer on MSN."
Thats really neat! perhaps he can make one more modification to it. Make it so he can use it with any wifi router and then he can make calls from anywhere in the city where there is free wifi! It's almost be like a cell phone, only free.
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with a Rolm phone 240. I have quite a few of them so what the hell. Matter of fact, I have a full 12 node Rolm CBX II 9000. And I don't have a POTS line to my name.. Long story..
Anyway, I took the Rolm phone and on the main board in the base unit I soldered two cables to the connection for the handset and speaker. So the handset runs straight into the soundcard of a machine that does Sykpe.
When the phone is on hook, the magnet in the handset cause a reed relay to pass audio from the soundcard to the speakerphone speaker in the base unit so you can hear it ring and hear normal sound events through it. When you lift the handset the sound re-routes to the handset and you use it like a normal phone.
You can't dial from it, none of the buttons or lights work, but the sound quality is excellent and you can rest it on your shoulder because it's a full sized handset, unlike the dinky cell phones of today.
To use it, you would SWEAR you are talking on a standard POTS phone. My friends are amazed and befuddled by it, so I have been building them for all my friends.
Next project is to go buy a cheapo cordless, my local grocery has them on the imported crap isle for $14 for a 2.4ghz.. It's probably crap but it's cheap enough to experiment on. I have a $300 Vtech 2 line cordless that I don't want to experiment on, I'll save it for when I get an adapter..
I also modified a cordless phone for use with online voice conversations. It's a Sanyo CLT-9171, one of the early 900 MHz spread spectrum digital ones. Using an oscilloscope it was easy to find where to connect. The phone still works for standard phone conversations, and I can even use one of the connections I added to record conversations.