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:
May. 02, 1995
Filed:
Jun. 24, 1992
J Michael Jarvis, Richmond, VA (US);
Andrew F Bass, Vienna, VA (US);
Gregory R Ilg, Raleigh, NC (US);
Charter Leasing Corporation, Richmond, VA (US);
Abstract
A digital station line controller is connected via a digital link, such as a T1 span, to the line side of a central office and via digital station line loops to digital terminal devices, such as telephones. The station line controller interprets certain signals used by a conventional protocol, such as TR8, between a central office and a remote terminal, as status requests. In response to the status requests, the station line controller provides status information obtained by monitoring the terminal devices connected thereto and the station line controller itself. The status information may be obtained by generating codes which perform tests of the terminal devices and the station line controller. In addition, non-voice information transmitted over a subscriber channel in the on-hook, no-ring state of the subscriber channel is decoded and used or output by the station line controller to a corresponding terminal device or auxiliary equipment.