Convergence Technologies Learning Activity: Voice Telephony Fundamentals

This presentation, made available by the National Convergence Technology Center (CTC), provides detailed information on voice telephony and how telephones work. The learning objective for the presentation is to "describe signaling and its importance to telecommunications and differentiate various signaling techniques involved in telephony." 

Each of the following topics is described in detail: What Makes the Telephone Work, Wires and Cables, Signaling and Transmission, Waveform, Local and Long-distance Calling, Transmission Lines, Lines and Trunks, and Bandwidth.