Checkpoint: Signals

Topics: Internet, Telephone, Telephone exchange Pages: 1 (324 words) Published: April 7, 2013

Explain the differences between data, voice, and video signals in 200 to 300 words.

Include a description comparing the differences between a private branch exchange (PBX) and Voice over Internet protocol (VoIP).

The three types of signals data, voice, and video. Besides the obvious differences between these three signals there is more to them. The first signal I will describe is the video signal. Like the name suggest a video signal transmits videos from one point to another. They come in both analog and digital. These can be used by business to transmit videos to video monetors around a business to transmit information to employees. The next type of signal is the voice signal. According to the last weeks required reading, the voice signal, or audio signal, is responsible for supporting applications based on sound, usually of the human voice. (8text) What this basically means is that the audio that goes through a network through a Voice over Internet Protocol (VoIP) or a private branch exchange (PBX) is a voice signal.

One of the differences between a PBX and a VoIP is basic function. A PBX is a system that in essence it is an internal telephone network that enables one office to call another office within the company. The company would only need to by one or two main telephone lines to connect to an outside line. So a business would save on money not having to supply each office with an outside line. A VoIP is similar to the PBX, but a VoIP utilizes a packet switched network. A VoIP uses a digitized voice data signal to pass the audio from one person to another, Nowadays a home user can even use VoIP at home whereas a PBX system is generally only used by larger companies. Lastly is the data signal. This signal covers the rest of the transmission. This signal covers web pages, programs, emails, and even pictures.
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