ADSL modem apparatus

Pulse or digital communications – Transceivers – Modems

Reexamination Certificate

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Reexamination Certificate

active

07082158

ABSTRACT:
A control monitors communication status during a data communication and determines a re-initialization is necessary in the current communication status. If the re-initialization is necessary, a pre-selected sub-carrier topology is inverted to request the re-initialization to an ADSL modem apparatus, which is installed by a central system. Upon receiving a reply to the re-initialization request from the ADSL modem apparatus, the re-initialization is performed after an expiration of a predetermined time period.

REFERENCES:
patent: 6498808 (2002-12-01), Tzannes
patent: 6888884 (2005-05-01), Benayoun et al.
patent: 2003/0053530 (2003-03-01), Noma et al.
patent: 2005/0053124 (2005-03-01), Eichrodt et al.
patent: 2005/0238091 (2005-10-01), Tzannes

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