| Telephony to Voice Over Wireless LAN. | | | | order for the computer to understand. This means that |
| A complete piece of apparatus for making and | | | | the analog information is divided into sections that are |
| receiving calls is called a Telephone Instrument. | | | | assigned numbers. For example, a continuous wave of |
| Analog and Digital Telephone Instruments. | | | | a tone would be represented by a large number of |
| Analog information-- like sound-- is, in a physical sense, | | | | squares that, from a distance, resolves into what |
| a waveform. Digital information is simply numbers, ones | | | | appears to be a smooth curve, but up close you can |
| and zeros. Analog phone lines carry waveforms, while | | | | see that it isn't really continuous, like a picture in a |
| digital phone lines carry bits. (A bit is either a zero or a | | | | newspaper. From far away, you see complete |
| one.) | | | | pictures, but the closer you look you see that it's just |
| The conversion of analog to digital then, is the | | | | made up of dots. And with the way the mind works, if |
| conversion of waveforms to bits. Analog information | | | | you get a significant amount of those dots, it looks like |
| needs to be represented in binary numbers (1 and 0) in | | | | a continuous picture. |