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. 05, 2004
Filed:
Jun. 26, 2000
Eric M. Rives, Hampton Cove, AL (US);
Adtran, Inc., Huntsville, AL (US);
Abstract
A high bit rate digital subscriber line (HDSL) communications scheme employs a serialized multiplexer—demultiplexer protocol, that enables both HDSL channels to be successfully transmitted over an asynchronous, serialized communication link. A service channel supplies control information used by a far end device to extract each HDSL channel from the serialized bit stream. A data channel interface circuit combines a pair of data channel segments of two 784 kbps HDSL channels into a standard 1.544 Mbps T1 serial data stream. The data channel interface circuit contains a register bank which stores embedded operations channel (EOC) information extracted from the two HDSL channels. Auxiliary HDSL signaling information stored in the data channel interface circuit is controllably accessed by a communications control processor for application to an output multiplexer. A framer unit supervises the operation of output multiplexer controllably and injects auxiliary (framing and time alignment) service channel signals to the output multiplexer. The framing structure of the serialized HDSL protocol provides a contiguous sequence of framing bits, HDSL asynchronous channel bits, bit-stuffing majority bits, a stuffing bit, a signaling bit, and 1.544 Mbps T1 payload bits.