Appeal 2007-0636
Application 10/351,016
Appellants invented a method and system for using digital subscriber
lines (DSL) or digital system cross-connect (DSX) ports in a legacy chassis
having a backplane made for DSX applications. (Specification 3).
Claims 1, 7 and 22 are illustrative and representative of the claimed
invention. They read as follows:
1. A line card for a telecommunication system, the line card
comprising:
functional circuitry to interface first type ports with second type ports;
line card connector contacts adapted to be selectively coupled to a
backplane of a chassis; and
a termination resistor adapted to terminate signal lines when the line
card is connected to a backplane without a termination resistor.
7. A telecommunication system comprising:
a chassis having a backplane without a termination resistor, the
backplane having a plurality of backplane connectors electrically coupled
to the backplane; and
one or more line cards, each of the one or more line cards having a
plurality of electrical card connection contacts adapted to be selectively
coupled to an associated backplane connector, at least one or more line
cards further comprising,
functional circuitry to interface DSX-1 or DSL ports with other
ports, and
a line card termination resistor adapted to terminate DSX-1
lines by a jumper coupled across select electrical line card connector
contacts, the line card further adapted to not terminate DSX-1 lines when
it is coupled to a backplane having a termination resistor.
2
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