The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 1996
Filed:
Mar. 02, 1992
Laurence L Sheets, Woodridge, IL (US);
Teltrend Inc., St. Charles, IL (US);
Abstract
An out of band data link for performance monitoring information using existing telecommunications transmission facilities. The Bell telephone network includes a variety of central offices and network interface units that should communicate with each other regarding performance. The data link allows the network interface unit to advise the telephone company's central office of difficulties. A first modem is interconnected between a pair of simplex leads in the central office telephone company's central office repeater transformers, and a second modem is interconnected between a pair of simplex leads in the network interface unit's transformers. The voltage between each pair of leads is used to effect communication between the telephone company's central office and the network interface unit. Accordingly existing cables can continued to be dedicated to the transmission of payload, rather than requiring the capacity of the cables to be reduced so that the network interface unit can transmit performance data to the central office.