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:
Nov. 24, 1998
Filed:
Mar. 29, 1996
Paul Christian Hershey, Manassas, VA (US);
British Telecommunications public limited company, London, GB;
Abstract
A system monitors utilization of a tributary to a main SDH transmission path. The main SDH transmission path is arranged to transport a series of data frames, each of which contains virtual containers. A data signal from tributary is loaded into virtual containers reserved to carry the data signal. The monitoring system includes an optical service unit and a computer. The optical service unit monitors bytes of the virtual containers reserved to carry the tributary for the presence of a predetermined bit pattern and transmits a report containing the results of the monitoring to the computer. In the computer, data contained in the report is used to evaluate utilization of the tributary. One example of the bit pattern which is monitored is the presence of all binary '1's in each byte of tile payload of a virtual container.