It is done using a translation graph . These units tend to be noisy in nature because of their need to translate continuous data into a finite one and vice versa. Amplitude Height, peak voltage of an analog or digital signal. A physical component that can communicate a computer over an analog telephone lines. Baud A symbol.
Symbols are the language that modems use.
A symbol is a point in the symbol space and it stands for a different length word , i.e. sequence of bits. BPS Bits Per Second refers to the communication speed. CO Central Office. The nearest service office of the telephone company to the customer. Usually, communications between CO s is fully digital and analog from the CO to a customer.