An audiographic telephone conferencing system between a plurality of parties or users either directly connected or through a piece of apparatus known as a "meet me bridge" over voice grade telephone lines. Each user has a programmed personal computer which controls a programmable or "smart" modem, cassette...http://www.google.co.uk/patents/US4736407?utm_source=gb-gplus-sharePatent US4736407 - Computer assisted graphic teleconferencing method and apparatus
