Abstract: A logical Management Information Base (MIB) residing in a Network Element (NE) including one or more Performance Management (PM) Group managed entities each having at least one PM Counter attribute, and a pointer; and a Threshold Crossing Alert (TCA) profile managed entity, each instance thereof having at least one PM Counter attribute, and an associated threshold value, where an instance of an PM Group managed entity points to an instance of the TCA profile managed entity whose at least one PM Counter attribute match those of the PM Group managed entity whereupon each of whose at least one PM Counter attribute is correspondingly assigned a threshold value from the TCA profile managed entity instance.

Abstract: An electronic digital signal cross-connect system (EDSX) is provided which includes a plurality of input terminals for respectively receiving bipolar 3-level input signals having a predetermined bit rate, and a plurality of output terminals for respectively providing bipolar 3-level output signals having the same predetermined bit rate. An interface circuit is provided which has an input section coupled to the input terminals to receive the bipolar 3-level input signals and an output section coupled to the output terminals to output the bipolar 3-level output signals. The input section of the interface circuit is constructed to include converting circuitry for converting the bipolar 3-level input signals into predetermined coded signals. Correspondingly, the output section of the interface circuit includes converting circuitry for decoding the predetermined coded signals into bipolar 3-level output signals.