How to change display name on NEC Digital Phone System
First, go to web browser (recommend IE) and type NEC server Ip address.
Username: USER1 password: 1111
After login in your NEC phone system, click Telephone Setting.
When getting the Telephone Setting, click details which one change the display name.
Type Display name in the name box.
After typing display name in the name box, need to click Apply button on the right top.
During this period, the phone will be inactive until finishing the process.