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:
Oct. 02, 2012
Filed:
May. 28, 2008
Kenneth Hann, Espoo, FI;
Heikki Laamanen, Espoo, FI;
Mikko Laulainen, Helsinki, FI;
Tellabs Oy, Espoo, FI;
Abstract
A method and arrangement for transferring synchronizing information in a data transmission system includes modem connections. The arrangement includes a modulator () arranged to generate an analog signal () modulated by synchronizing information, the frequency spectrum of the signal being located in a frequency range that falls outside the data transmission bands of the modem line connected to the network element. The arrangement includes a switching circuit () arranged to connect the analog signal to a data transmission cable () that forms part of the modem line connected to a network element. The arrangement includes a second switching circuit () arranged to receive the analog signal from a data transmission cable that forms part of the modem line connected to the second network element. The arrangement also includes a regenerator (-arranged to regenerate the synchronizing information from the analog signal.