For sale: 9 units of Panasonic KX-TDA6178X, expansion cards for Panasonic phone systems. Model: KX-TDA6178X Type: 24-port Analog Expansion Card Quantity: 9 units Condition: Used Suitable for telecommunication companies, maintenance and installation of Panasonic KX-TDA/TDE systems. Sale is for wholesale or by agreement. Serious buyers please contact for inquiries about price, condition, and testing.