Modems. cannot install my usb56kem external modem to my lt2044u gateway netbook.i do have access

1 ANSWERS

1. amomipais82
   

   A modem (modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. Modems can be used over any means of transmitting analog signals, from driven diodes to radio.
   
   The most familiar example is a voiceband modem that turns the digital 1s and 0s of a personal computer into sounds that can be transmitted over the telephone lines of plain old telephone services (POTS), and once received on the other side, converts those 1s and 0s back into a form used by a USB, Ethernet, serial, or network connection.
   
   Modems are generally classified by the amount of data they can send in a given time, normally measured in bits per second (bit/s, or bps). They can also be classified by Baud, the number of times the modem changes its signal state per second. For example, the ITU V.21 standard used audio frequency-shift keying, aka tones, to carry 300 bit/s using 300 baud, whereas the original ITU V.22 standard allowed 1,200 bit/s with 600 baud using phase-shift keying.
   
   Faster modems are used by Internet users every day, notably cable modems and ADSL modems. In telecommunications, wide-band radio modems transmit repeating frames of data at very high data rates over microwave radio links. Narrow-band radio modem is used for low data rate up to 19.2k mainly for private radio networks. Some microwave modems transmit more than a hundred million bits per second. Optical modems transmit data over optical fibers. Most intercontinental data links now use optical modems transmitting over undersea optical fibers. Optical modems routinely have data rates in excess of a billion (1x109) bits per second. One kilobit per second (kbit/s, kb/s, or kbps) as used in this article means 1,000 bits per second and not 1,024 bits per second. For example, a 56k modem can transfer data at up to 56,000 bit/s (7 kB/s) over the phone line.

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