The UK ETACS version of this Phone can be found herehttp://www.mobilecollectors.net/phone/3023/nec-mp5b2b6-1a
Test mode and NAM Programming
To enter test mode:
(lock code) FCN-9 (lock code) FCN MEM 76 MEM #01
MEM #01 - LCD Screen Test; lights all digits on the screen
MEM #02 - Reboots phone; exits test mode
MEM #22 - ? Changes all the digits to 1's and fills the screen
MEM #23 - Phone firmware version
MEM #24 - Reads ESN
MEM #26 - Total Calls Made on the phone in hours and mins
MEM #39 - Memory initialise
MEM #61 - Status display mode (enter 1 to enable)
MEM #71 - NAM programming - use # to cycle through menus
The default lock code is 0000, 1234, or the last 4 digits of the phone number. If you can't get this to work, you need a dongle (hardware) to get into the phone's test mode.
This is just the basic test mode though.
The NEC Analog Family ..