Panasonic 16-Port CO Trunk Card KX-TDA0181<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Compatible with KX-TDA100， KX-TDA200， KX-TDA600， KX-TDE100， KX-TDE 200， KX-TDE 600 Panasonic Phone Systems</li><li>Support up to 16 CO Lines per Card</li><li>4 ports have power failure transfer</li><li>Card requires 1 free slot</li></ul></div><img src="http://ecx.images-amazon.com/images/I/11PEz-jB4IL.jpg" noproxy>