This is a Panasonic Advanced Hybrid System KX-TEA308, refurbished with new processor in the base unit about 6 years ago. It's designed for small to medium sized offices/work places with hard-wired extensions back to the central processor unit. There is 1 "master phone" with caller ID display and for programming the system with about 100 numbers if needed KX-T7730. Each of the 3 slave desk phones (1 x KX-T7720 & 2 x KX-T7750), as well as the master phone have 12 quick dial buttons. All the original manuals available to go with thee system
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