This assumes a Plug & Play phone system from Telephone Systems Direct.com but should work on most NEC DS1000/DS2000 phone systems. It is the first step in making any changes to the phone system programming.
For assistance please call 866-898-2303.
From a display phone with the handset down:
Press ICM #*#* 372000
Press Hold
The phone should beep
You can now scroll through the programs or enter the program you need.
