What about Panasonic cordless telephone 4021?
If it's a digital machine, you need to find the submenu below the menu to find the meaning of "'register'", that is, "registration.". Then, in accordance with the meaning of the display of the machine, press the host's "page" or "intercom key" for a few seconds, the general register of successful buzzer buzzer sound, while the opportunity to show'Registered, indicating successful registration.
If the simulator is very simple, as long as the handle machine on the host number of seconds (like charging way), you can see the host lights quickly flicker, said the success of the code. If the indicator blinks slowly, it means the code is not successful;
Cordless phones are analog and digital. The two phones have different codes.
