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. 26, 2002
Filed:
May. 11, 1999
Stephen Bennett Elliott, Allen, TX (US);
Nortel Networks Limited, St. Laurent, CA;
Abstract
As a telecommunications device goes off-hook a simultaneous connection is made to a local exchange and a data network removing the necessity to dial, or input numbers to access the data network. Upon connection to the local data network, a modem tone is returned to the telecom device. Connection to the local exchange causes a dial tone to be returned to the DSLAM in the local change. The device receives the modem tone, the dial tone is blocked by the DSLAM and a data communication session begins. If the device transmits DTMF signals within 20 seconds, the call reverts to a standard switched call, dropping the connection with the local data network. If no DTMF signals are sent within 20 seconds, the DSLAM releases the connection with the local Exchange and the data communications session continues.