Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1997-01-15
1998-09-08
Loomis, P.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
379 9306, 379 9309, 379 9333, 375222, 375224, H04M 124, H04M 1100, H04B 346
Patent
active
058056696
ABSTRACT:
Existing customer premises wiring can be used with high speed digital modems, such as RADSL modems by using POTS filters in line with each piece of PSTN equipment. Alternatively, an RADSL modem includes a line monitor which detects when a piece of PSTN equipment experiences a hook-switch transition. Upon that occurrence, the error detection circuitry in the RADSL modem is disabled for a time period sufficient to avoid the counting (with associated RADSL modem rate change) of any burst errors associated with the PSTN equipment going off-hook or on-hook.
REFERENCES:
patent: 5392334 (1995-02-01), O'Mahony
patent: 5559792 (1996-09-01), Bottoms et al.
patent: 5617466 (1997-04-01), Walance
patent: 5648989 (1997-07-01), Ko
Bingel Thomas Jeffrey
Patel Mahendra Manibhai
Loomis P.
Paradyne Corporation
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