Alcatel

Alcatel Lucent

François Jeanjean

Frank Octaaf Van Der Putten

Geert Arthur Edith Van Wonterghem

A support identification device comprising a support (BPA), e.g. a rack or backplane of a telecommunication system, and an identity receiver (PCB), e.g. a printed circuit board or card, coupled to an identity transmitter or connector of the support. The identity transmitter has several read pins (id-id=R-R) each at a logical level (0, 1) to indicate (identify) the type of support. The card (PCB) further has write terminals (W, W) coupled to dynamic terminals (D, D) of the support (BPA). These dynamic terminals are coupled to one or more of the read pins (id-id). The card is also provided with a program that sets the write terminals at a first logical level, reads a first logical level at each read pin (R-R), then sets the write terminals at a second logical level, reads a second logical level at each read pin, and determines from the difference between the first and the second read logical levels to which write terminal each read terminal is coupled, or not. This allows to obtain (2+w)identifications with n read pins and w write pins, instead of 2identifications with the same total number n+w of read or basic pins.

Support identification device

Conventional modems coupled in parallel to a coupling need a sharing apparatus, which can be avoided by providing each modem with a detector for detecting upstream/downstream signals to be transceived by other modems coupled in parallel. The detector has a distinguisher for distinguishing upstream signals and downstream signals. An additional filter between the coupling and detector prevents the modem from interfering with the other modems coupled in parallel. The modem may have an active/passive state corresponding with a lower/higher impedance.

Method and apparatus for processing multiple signals transceived through a coupling

A passive filter arrangement and a method of providing such a filter is described. The frequency response of the filter arrangement is substantially the same as the frequency response of a first filter of an order having a first value, the frequency response of the first filter being representable by a first set of one or more poles and/or one or more zeros. Descriptions of a plurality of second filters are generated, each second filter having an order lower than the order of the first value, each second filter having a frequency response representable by a one or more poles and/or one or more zeros, the one or more poles and/or one or more zeros of each lower order filter being a subset of the first set. The lower order filters are cascaded.

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Wemmel, Belgium

François Jeanjean