A competitor selling an IP-enabled PBX has told your client that its solution is scalable. Which two of these statements might you use to best clarify the competitor definition of “scalability” with your client? (Choose two.)

A.
The number of IP-enabled phones is limited per card, and the number of cards is limited per box.

B.
While there is no hardware limitation on how many phones a card can support, the software limits the number of phones that can be supported.

C.
An IP-enabled PBX will have the scalability limitations of a traditional PBX.

D.
An IP-enabled PBX cannot use existing phones, and new phones must be purchased to work with the system.