MDT9100-10
Test and service mode:
After unit boots up, push the "FORMS" key, then the "T" key then "E" key.
This brings up the service menu:
A P. O. S. T. test
1 EEPROM test
2 radio test menu (password 1-2-3-4-5)
3 Configure EEPROM (password 1-2-3-4-5)
1. terminal parameters
2. radio 1 setup
3. radio 2 setup
4. ACT parameters
4 software ID / version
5 keyboard test
You may need this programming dongle to access the test mode above.