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:
Mar. 31, 2009
Filed:
Feb. 18, 2005
Jason N. Morgan, Brownsboro, AL (US);
Andrew T. Ruble, Harvest, AL (US);
Jason N. Morgan, Brownsboro, AL (US);
Andrew T. Ruble, Harvest, AL (US);
Adtran, Inc., Huntsville, AL (US);
Abstract
An alarm indication translation mechanism in a digital access and cross-connect system monitors all incoming tributary DSstreams for the presence of an alarm indication. Whenever an alarm indication is detected in a fractional tributary DSdata stream, all DSbytes within the Tstream containing that tributary DSdata stream include the detected alarm indication. For a Yellow alarm, this means that for the case of D4 superframe format (SF), the second most significant bit of each of the twenty-four bytes of a Tframe containing at least one fractional DScarrying alarm information is set to a '0', irrespective of whether the bytes are valid DSs or idle bytes. For extended superframe format (ESF), Yellow alarm is transmitted by sending a repetitive sixteen bit pattern consisting of eight marks or '1's, followed by eight spaces or ‘0’s in the data link.