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:
Apr. 18, 2006
Filed:
Jul. 20, 2001
Kevin W. Schneider, Huntsville, AL (US);
Thomas L. Ballard, Iii, Madison, AL (US);
John B. Wilkes, Jr., Harvest, AL (US);
Philip David Williams, Madison, AL (US);
Gary M. Willoughby, Harvest, AL (US);
Mark Jeffries Ogden, Owens Cross Roads, AL (US);
Michael Scott Sansom, Huntsville, AL (US);
W. Stuart Venters, Huntsville, AL (US);
Kevin W. Schneider, Huntsville, AL (US);
Thomas L. Ballard, III, Madison, AL (US);
John B. Wilkes, Jr., Harvest, AL (US);
Philip David Williams, Madison, AL (US);
Gary M. Willoughby, Harvest, AL (US);
Mark Jeffries Ogden, Owens Cross Roads, AL (US);
Michael Scott Sansom, Huntsville, AL (US);
W. Stuart Venters, Huntsville, AL (US);
Adtran, Inc., Huntsville, AL (US);
Abstract
Relatively low cost asymmetric digital subscriber line (ADSL) service and auxiliary POTS service are delivered over extended distances (e.g., at least 20–25 kft), by a hybrid ADSL-SDSL architecture insertable between central office and remote sites of an ADSL system. Central office and remote site transceivers employ trellis coded pulse amplitude modulation and a data rate that conforms with the signal transport capability of an extended distance symmetric DSL (SDSL) loop, while providing a 64K POTS channel. The central office and remote site transceivers controllably insert idle asynchronous transfer mode (ATM) cells in upstream and downstream ADSL channels to compensate for timing differences with ADSL equipment.