'Local exchange sends' presentation slideshows

Introduction to Communications and Networks ECI-2-830

Introduction to Communications and Networks ECI-2-830. Dr. Vincent Siyau. Communication System Model. Off hook now !!. A Simple Telephone. On hook now !!. A More Realistic Telephone. Signalling in Telephone Network. LE: Local Exchange (i.e., Central Office). Dual tones for each key.

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