The DSX-3 is a common point in central offices or network nodes that provides the following functions: • Termination of a variety of equipment referred to as network elements (NE). The NE are permanently cabled to this common point during the initial installation and remain terminated at the DSX-3 for the life of the equipment. • Cross-connection of two NE together to configure a circuit. The cross-connect jumper is a semi-permanent connection that may be changed as the telephone network evolves and circuits are re-configured to meet service demands. As new equipment is introduced into the network, this replaceable jumper facilitates a means to re-connect equipment together throughout the. | DSX-3 Cable and Cross-Connect Limits application note Overview The DSX-3 is a common point in central offices or network nodes that provides the following functions Termination of a variety of equipment referred to as network elements NE . The NE are permanently cabled to this common point during the initial installation and remain terminated at the DSX-3 for the life of the equipment. Cross-connection of two NE together to configure a circuit. The cross-connect jumper is a semi-permanent connection that may be changed as the telephone network evolves and circuits are re-configured to meet service demands. As new equipment is introduced into the network this replaceable jumper facilitates a means to re-connect equipment together throughout the continuous upgrade of equipment. Access of circuits by means of jacks. Jack access provides a means to - Test circuits when a failure occurs and sectionalize portions of the circuit to determine which NE is defective. - Patch around the failed NE to quickly restore service until the defective NE is repaired. - Patch existing NE to new NE during cutovers when portions of the network are upgraded to a new technology of equipment. After the patch is made the old jumper is removed and a new jumper is added to connect old and new NE together and then the patch is is important to understand that based on the application the appropriate module must be utilized to ensure proper signal monitoring. The following diagram illustrates the difference between each module. To accomplish the flexibility of this system an equal level point ELP must be established at the DSX-3. The ELP ensures that signals from all NE are at the same amplitude and signal strength at this common cross-connect and access point the DSX-3. When a common ELP is established any two NE may be connected together without re-adjusting the signal strength. Furthermore when circuits are re-configured during the evolution of the network re-adjustment of NE is not
