Frequently Asked Questions
Recovering Lost Security Codes
The RFC-1/B has four security codes: main access, control access, basic programming and advanced programming. There is a command to read, and optionally reprogram, each security code. These commands can be used to recover the security codes if they are forgotten or unknown to a new engineer.
The commands are:
- 72: main security code
- 73: control security code
- 74: basic programming security code
- 75: advanced programming security code
There is one condition. These commands only work from the local phone. If you have a key to the building, you have access to the system security codes. The system will return an error if these commands are issued from a dial-up connection
The value 10 represents an unused digit in a security code. For instance, the main security code can be up to eight digits long. If a six digit code is used, the final two values will be 10. The value 10 is programmed using the star (*) key. Unused digits are placed at the end of the code.
Assume that an RFC-1/B has all the factory settings and you want to change the main security code.
- Pick up the local phone and press the local control button to gain local access.
- Enter the command 72
- The RFC-1 responds, "main security code" followed by eight digits.
- After the final digit it says, "push pound to reprogram".
- Press the pound (#) key.
- The RFC-1 responds, "enter 8-digit security code".
- Enter the digits for the code. Fill unused places with the star (*) key.
- When eight keys have been pressed the RFC-1 responds, "OK".
The process is complete. The new code is programmed.
When the commands 72-75 are issued, the corresponding code is read and the command terminates at normal operating mode. Nothing changes unless the # key is pressed at the prompt.