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Simple Intercom From a Pair of Old Corded Phones
DIY Hacks and How Tos
2 Phone Intercom with Buzzers...
Cordless Phones Used As Home Intercom
How to make an Intercom using telephone cables
VOIP Phone AND intercom system
Hack a VOIP Box Into a Telephone Intercom
Cheap and Easy Guide to Building a Private Telephone System
Direct connecting two (old fashioned) modems or telephones.
THE WORRY FREE PHONE
Posted:Jan 13, 2011
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