Eric Ott Brockman

US Patent:

7245701, Jul 17, 2007

Filed:

Sep 20, 2004

Appl. No.:

10/945512

Inventors:

Gary Tennyson - Alabaster AL, US
Eric Ott Brockman - Hoover AL, US

Assignee:

AT&T Intellectual Property, Inc. - Wilmington DE

International Classification:

H04M 1/24
H04M 3/08
H04M 3/22

US Classification:

379 103, 379 104, 379 2201, 379 2204, 379 24

Abstract:

A system and method for verifying the integrity of a DSL circuit on a shared telephone line. The invention uses the amplitude modulation principles to overcome the difficulty associated with a blocking capacitor that isolates a DSLAM on the DSL circuit from the rest of the shared telephone line. A transmitter of the invention mixes a high frequency carrier signal and a low frequency audio signal to produce an amplitude-modulated test signal. The amplitude modulated signal is supplied to the telephone line at a main distributing frame side of the blocking capacitor and is detected by a receiver at the DSLAM side of the blocking capacitor.

US Patent:

20080013695, Jan 17, 2008

Filed:

Jul 17, 2007

Appl. No.:

11/779077

Inventors:

Gary Tennyson - Alabaster AL, US
Eric Brockman - Hoover AL, US

International Classification:

H04M 1/24

US Classification:

379001030

Abstract:

A system and method for verifying the integrity of a DSL circuit on a shared telephone line. The invention uses the amplitude modulation principles to overcome the difficulty associated with a blocking capacitor that isolates a DSLAM on the DSL circuit from the rest of the shared telephone line. A transmitter of the invention mixes a high frequency carrier signal and a low frequency audio signal to produce an amplitude-modulated test signal. The amplitude modulated signal is supplied to the telephone line at a main distributing frame side of the blocking capacitor and is detected by a receiver at the DSLAM side of the blocking capacitor.

US Patent:

6798866, Sep 28, 2004

Filed:

Dec 12, 2001

Appl. No.:

10/012460

Inventors:

Gary Tennyson - Alabaster AL
Eric Ott Brockman - Hoover AL

Assignee:

BellSouth Intellectual Property Corp. - Wilmington DE

International Classification:

H04M 124

US Classification:

379 103, 379 101, 379 104, 379 21, 379 2201, 379 2204, 379 24

Abstract:

A system and method for verifying the integrity of a DSL circuit on a shared telephone line. The invention uses the amplitude modulation principles to overcome the difficulty associated with a blocking capacitor that isolates a DSLAM on the DSL circuit from the rest of the shared telephone line. A transmitter of the invention mixes a high frequency carrier signal and a low frequency audio signal to produce an amplitude-modulated test signal. The amplitude modulated signal is supplied to the telephone line at a main distributing frame side of the blocking capacitor and is detected by a receiver at the DSLAM side of the blocking capacitor.