Telecommunications Laboratory

Telecommunications Software

Active research programs

RACE R2023: UNOM In this project an ATM VP testbed will be established and used to conduct broadband multiservice user experiments. The testbed s focal point is an ATM digital cross-connect (DXC) node. This node can be managed by a local terminal, or by the network management center. The local terminal displays information as alphanumeric messages which lead to low productivity of the operator and slow response. For this reason, NTUA has designed and implemented a Graphical User Interface (GUl) for the control of the cross-connect. This interface graphically represents the node s configuration and structures operator-machine dialogue in windows. Management commands available to the operator are grouped in pull-down menus corresponding to the standard CCITT five management areas (configuration, performance, accounting, security, maintenance). The usability of the GUI has been evaluated for a small subset of the commands and has proved that the GUI dramatically improves operator productivity and satisfaction while reducing errors.