Comdial DX-120 phone system
I would consider this phone system the "turd" of all phone systems that ever was or will be. I took great pleasure in taking this system apart. It has some good cards but that's the only good thing about this system.
The circuit boards stack 1 on top of the other with brass off sets and are connected with ribbon cables.
This board sets in the bottom of the plastic cabinet and the expansion boards (half the size of this one) stack on top to either the left or right.
3 digital station and analog trunk cards.
3 main control boards. CPU in the center and voice mail board on the right.
Transformer and power board, brass off sets, some ribbon cable and about a pound of insulated wire.
Comdial 7261 digital phone.
I have about 35 more that still need to be taken apart.
I was hoping these phones had better boards but they're not too bad.
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