Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission
Reexamination Certificate
2011-08-02
2011-08-02
Tieu, Binh K (Department: 2614)
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Of data transmission
C379S024000, C379S027030, C379S029080
Reexamination Certificate
active
07991122
ABSTRACT:
Existing and future standardized VDSL2 and other systems can be integrated into and used with a vectored DSLAM or other vectored or non-vectored DSL system, without a new user disrupting service to other users in the same or a nearby binder, in some cases by using transmit power, CARMASK and/or PSDMASK DSL capabilities to reduce both downstream and upstream training-signal levels so that training of a new DSL line is non-disruptive, despite a lack of knowledge of the pre-existing binder. For vectored systems, the crosstalk from that tone can be observed, learned and then added to the vectoring system so that any subsequent excitation on that tone would be eliminated by vector processing. A second tone then can be added in the same way, etc. In non-vectored DSLs that might be operating in a binder or line set, once these non-vectored lines are observed to be present, a vectored line set controller, such as a DSL optimizer, then can anticipate the potential interference from such non-vectored lines.
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Cioffi John M.
Ginis Georgios
Lee Bin
Rhee Wonjong
Adaptive Spectrum and Signal Alignment, Inc.
Blakely , Sokoloff, Taylor & Zafman LLP
Tieu Binh K
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