Check Firmware Version on Panasonic KX-TEA308 and KX-TES824 Phone Systems

To check compatibility when adding additional cards , or trying to access some system features you will need to know what the Firmware Version of your Panasonic KX-TEA308 phone system is.

to do this you will need to know the programming password for the system. The deafult value is 1234, if this has been changed on your system you will need to contact your installer or reset the system to default values and re-configure the whole system.

Here is the key sequence (without lifting handset and using default password of 1234

PROGRAM *#1234
998
SP-PHONE
AUTO ANS/MUTE

This will show you whether you are version 1, 2 or 3 firmware (eg 1.0.48 is version 1 firmware)

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Check Firmware Version