Abstract: The system includes up to four communication links, a separate link selector for each link, and a separate link scanner for each telephone station. The system is suitable for usage with conventional dial pulse or tone selective key telephone sets.
Type:
Grant
Filed:
January 27, 1978
Date of Patent:
February 12, 1980
Assignee:
Tone Commander Systems, Inc.
Inventors:
Maurice I. Smith, John D. Gillen, Gerald L. Edwards
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