Ericsson Dialog extra key panel unit for system phone

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• The Ericsson extra key panel is an add on unit designed to attach to the Ericsson Dialog range of telephones
• Not all the Dialog phones have the capability of attaching an expansion key panel as not all of the models have the slots
• Ericsson Phone Compatibility The Ericsson Dialog phones that are compatible with the extra key panel unit are the: Ericsson Dialog 4222 – 1 Extra Key Panel Only Ericsson Dialog 4223 – 1-4 Extra Key Panels Ericsson Dialog 4224 – 1-4 Extra Key Panels Ericsson Dialog 4225 – 1-4 Extra Key Panels Ericsson Dialog 4425 IP – 1-4 Extra Key Panels Ericsson Dialog 4422 IP – 1 Extra Key Panel The unit comes with 17 programmable extra keys that the user can set to their preference
• Also the extra key panels are available in both light and dark grey just like the phones