The Modem is the piece of equipment for your computer that is responsible for transferring information to and from your internet networking system. It is also known as a modulator-demodulator. There are modems for dial up network services and there are modems for satellite networking services.
When first introduced they were connected to computers by a serial port and were capable of transferring data at only 75 baud (bits per second). The next type of modems introduced were used by placing the phone hand set on to a cradle that contained the modem. The hand set received the signal that were then transferred to the modem to decipher the information. This increased speeds to 1200. Still very slow they changed designs in 1980, setting up a R-11 phone line directly to the modem.
By the mid 1980’s they were able to get 9600 baud by producing faster chips. Micron Networking Protocol (MNP) standards provided compressed data techniques along with error corrections. This increased baud speeds tremendously to 56k. Compressions speeds of V:32, V32 bis, and V 42 were excellent but were rarely achieved, because of noisy phone lines, and wrong connections. The modems were designed to default to lower speeds when high speed connections could not occur. Therefore, most transfers resulted in slow processing.
Most internet users are getting fed up with the slow speed transfers, and have switched to satellite connections. This type of internet connections can be achieved with out having to use the phone lines, eliminating band connections and slow processing.