TDM410 and phones


I want to know if it is possible to connect for example 10 old phones to a system that have TDM410 with 2 FXO modules.

Actually i want to know if i want to connect the old phones to the pbx, i should have the same number of FXS modules in the boards ? or there is any other way ?!

I just heard about ATA ? does it use for this purpose ?


please help me