Specification :

The design of the KX-TDA100 and KX-TDA200 allows your business to expand your system as your needs grow by plugging in additional cards and telephones to the plug-in architecture. All of the expansion card slots are universal, so that any card can be plugged into any universal slot, allowing maximum use of what' s available within the cabinet, What' s even better is the KX-TDA expansion cards operate on both the KX-TDA100 and KX-TDA200 systems. That means that if you outgrow the KX-TD100 system, you can unplug the expansion cards and plug them directly into the KX-TDA200 without having to buy a whole new system. In terms of maximum system capabilities the KX-TDA100 can offer up to 96 ports and the KX-TDA200 can offer up to 192 ports with 128 wireless phones ( KX-TD7690, KX-TD7680)