NEC- Swapping Extensions on system via handset with feature Code
95-05 add a pin number to the handsets
20-13-42 make sure extension data swap is enabled in your class of service
11-15-14 remove 740 from modem access as it no longer relevant and put in 11-15-12-Swap extension data
To Activate
From handset
Dial :740
PIN :1234
Extension number you want to be :
Phone will reboot and swap extension numbers will become that extension with all the programming data
If IP handsets are set to manual mode 10-46-01 the user will need to renter, the pin at final stage to re login the phone