Right now we have a system that says R6 V11.

If I take the sticker off it says Processor R3.

I want to add caller ID capability and have been told it takes R7 capability.

Do I have to buy a new card, and if so will a Processor CKE3 R7 V12 suffice?

What does it all mean anyway? Why are there processors named CKE3, CKE4, and CKE5 and V7?

Can anyone clarify this?

Thanks.