Before There Were PBX Systems Telephone Switching devices have been around us since the late 1950’s withÂ Western Electrics 18 buttonÂ Call Director. This system used a rotary dial interface sending electrical pulses down a copper wire to a switching machine. Variations continued right up into the early 1980’s. PBX Systems 32 Years Ago AT&T made the
Uploaded onÂ Nov 18, 2009 At TEDIndia, Pranav Mistry demos several tools that help the physical world interact with the world of data — including a deep look at his SixthSense device and a new, paradigm-shifting paper “laptop.” In an onstage Q&A, Mistry says he’ll open-source the software behind SixthSense, to open its possibilities to all.