Loop diagnostic mode for ADSL modems

Details Loop diagnostic mode for ADSL modems Loop diagnostic mode for ADSL modems

2005-12-27

2005-12-27

Ton, David (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Transmission facility testing

C714S716000

Reexamination Certificate

active

06981186

ABSTRACT:
A method for establishing communication in an ADSL subscriber loop, the method comprising the steps of determining that showtime cannot be entered during initialization of communication between the modems; requesting entry into a diagnostic mode by one of the modems upon the determining; diagnosing line conditions as being unable to support communication at a predetermined standard; and establishing communication at a standard lower than the predetermined standard.

REFERENCES:
patent: 5999540 (1999-12-01), McGhee
patent: 6064692 (2000-05-01), Chow
patent: 6292539 (2001-09-01), Eichen et al.
patent: 6310909 (2001-10-01), Jones
patent: 6389065 (2002-05-01), McGhee
patent: 6456694 (2002-09-01), Posthuma
patent: 6658052 (2003-12-01), Krinsky et al.
patent: 6725176 (2004-04-01), Long et al.
patent: 6885696 (2005-04-01), Wingrove

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