I don't know if you are asking the OP or me, but my Panasonic is a DECT6. It's a KX-TGE270; a really nice machine. I wish it had 2 line capability. Actually, it does, in a way, but I would like 2 copper land lines to work. The 2 line capability is that is bluetooth connects to a cellphone. You can then make or answer calls on any handset using the cell, even if another handset is busy on the land line.