To make programming changes on the NEC DSX-80, DSX-40 or DSX-160 telephone system with PC Programmer you will first need to download and install the software (click here). After installing the program on your PC you will need to connect the NEC telephone system to your Local Area Network and assign an IP address to the telephone system. Contact your network administrator for assistance.
Open the NEC PC Administrator and click on System and select Connect from the drop down menu. Click the Ethernet option and insert the IP address you used for the NEC DSX telephone system. Click OK and you should be prompted for the system password.
The first thing you should do after connecting to your system is click the Retrieve icon and save a copy of your database.