All set and into the programming of my KX-TA824 (3 CO/16EXT by way of base unit and TA82470 card) and TVA50 (2 port) setup I recently obtained to replace my older KX-TA624/TVS50. Have a combination of T7735, T7736 and T7731 phones on the system. Presently no paralleled SLTs but at least one will be added to the power out default port later. I have a doorphone card with two TA30865 doorphones.

Anyway out of curiousity which Panasonic proprietary multi-line cordless handsets will work with the TA824? I have read that the TD7896 will but I'm sure there are others. Also with these does each cordless handset need a base or can one base work with more than one phone?

I am pretty sure that the 7880 through the 7896 will work. They are sold as a pair. One base and it's accompanying handset.