Condition - Very Good The item shows wear from consistent use, but it remains in good condition and functions properly. Item may arrive with damaged packaging or be repackaged. It may be marked, have identifying markings on it, or have minor cosmetic damage. It may also be missing some parts/accessories or bundled items.
Understanding Telephone Electronics
This successful title explores how conventional telephone systems operate and how digital electronics replace them. This introduction also presents an overview to state-of-the-art speech circuits, dialing, ringing, and central office electronics.
