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:
Jun. 22, 2004
Filed:
Aug. 24, 2000
Ingemar Jaegtnes, Rödeby, SE;
Gerhard Zimmermann, Vienna, AT;
Ericsson Enterprise GmbH, Vienna, AT;
Abstract
A message transmission system having at least one subscriber's terminal device that is connected by way of a subscriber's line that is comprised of a first and second lead, with a subscriber's interface circuit (SLIC), preferably integrated, which comprises a loop detector circuit and subscriber's feeder circuit, such that in the area of, or on the subscriber's terminal device, a subscriber signaling display is provided, which may be controlled by way of a signaling control circuit, and such that a controllable switch ( ) is connected between the subscriber's interface circuit ( ) and the first lead (a) of the subscriber's line (a, b), which switch, in a first position, connects the first lead (a) of the subscriber's line (a, b) and an input of the subscriber's interface circuit ( ) with each other, and in a second position, connects the first subscriber's line lead (a) with a pole of an additional power source ( ). The other pole of the additional power source ( ) is connected to a voltage supply pole ( ) of the subscriber's interface circuit ( ), and the controllable switch ( ) may be controlled by way of the signaling control circuit ( ).