This extension card has been fully tested and is in good working order. It allows the addition of 8 analogue and 8 digital extensions.
It has been removed from a Panasonic KX-TDA100, but is also suitable for the Panasonic KX-TDA200, KX-TDA600, KX-TDE100, KX-TDE200, and the KX-TDE600 telephone systems.