Patent ID: 7630296

Claim:
A system for remotely restoring inoperative data communications, comprising: a first communications unit comprising: a data communications transmitting unit; a second communications unit comprising: a data communications receiving unit; a transmission medium coupled to said data communications transmitting unit and said data communications receiving unit; said first communications unit further comprising: a first logic circuit coupled to said data communications transmitting unit, said first logic circuit operable to generate a predetermined sequence of signals that key an output of said data communications transmitting unit on and off to send said predetermined sequence of signals over said transmission medium; and said second communications unit further comprising: a second logic circuit coupled to said data communications receiving unit, said second logic circuit configured to recognize said predetermined sequence of signals as indicative of inoperability of said second communications unit and output a signal to attempt to restore said second communications unit, if said predetermined sequence of signals is detected at said data communications receiving unit.