Utilize Unused Telephone Lines to Make a Home Intercom System
Markus Wandel has created a nice DIY home intercom howto, complete with schematics and usage instructions:
If you can manage it, get two speakerphone-type phones. Leave them in "speakerphone" mode continuously and pound on the keypad to attract the attention of the other end.
Heh. Via Boing Boing.
If you can manage it, get two speakerphone-type phones. Leave them in "speakerphone" mode continuously and pound on the keypad to attract the attention of the other end.
Heh. Via Boing Boing.
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