Change name of 1 extn

Without picking up the handset, press program *# 1234. 003. keeping pressing the speaker phone until the extn u want to change is displayed. Note down the jack no.

Then press hold and 004. Then press speaker phone 1 time and enter the jack no of the extension whose name has to be changed. then change the name. After you finish entering the name press autodial.

I NEED TO CHANGE THE HANDSET NAME OF EACH PHONE