Patents Represented by Attorney B. Colt McClelund

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  • Telephone line device
    Patent number: 5881143
    Abstract: A programmable telephone line device (10) for selectively interconnecting two or more telephone lines between a plurality of communication instruments is disclosed. The device (10) includes an assignment matrix (24) for inter-connecting the telephone lines with the communication instruments and a control assembly (26) for automatically or manually directing the assignment matrix (24) to transfer a communication instrument from its primary telephone line to a roll-over telephone line if its primary telephone line is in use.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: March 9, 1999
    Assignee: Sprint Communications Co. L.P.
    Inventor: Harold Wayne Johnson