What are characteristics of modem?

Answer 1

Modem Characteristics

Modems can be characterised by the following properties:
Internal / External / PCMCIA modem
An internal modem is installed in one of the computer's expansion slot.
External modems are fully functioning external devices. The external modem is connected to a computer using a serial cable to one of the computer's serial ports, and draws power from an external power source.
PCMCIA - Personal Computer Memory Card International Association. (Or People Can't Memorise Computer Industry Acronyms)
Transmission speed
Error detection and correction
Compression

Answer 2

A modem (a portmanteau constructed from modulate and demodulate) 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. Experiments have even been performed in the use of modems over the medium of two cans connected by a string.

The most familiar example of a modem turns the digital '1s and 0s' of a personal computer into sounds that can be transmitted over the telephone lines of Plain Old Telephone Systems (POTS), and once received on the other side, converts those sounds back into 1s and 0s. Modems are generally classified by the amount of data they can send in a given time, normally measured in bits per second, or "bps".

Far more exotic modems are used by Internet users every day, notably cable modems and ADSL modems. In telecommunications, "radio modems" transmit repeating frames of data at very high data rates over microwave radio links. Some microwave modems transmit more than a hundred million bits per second. Optical modems transmit data over optic fibers. Most intercontinental data links now use optic modems transmitting over undersea optical fibers. Optical modems routinely have data rates in excess of a billion (1x109) bits per second.

Answer 3

Now that you have a definition do you need to know what characteristics can be set on a modem? Most common include baud rate, number of data bits, number of stop bits, parity of word, delay before sending when CTS is received, delay after sending before RTS is dropped. Most older modems use jumpers or switches to set those choices. Some newer ones can be controlled by software.

Answer 4

My characteristics do you mean definition?

Modem: an electronic device that connects computers via a telephone line, allowing the exchange of information. It consists of a modulator to convert computer information into a telephone signal and a demodulator to convert it back again.

Answer 5

modam stands for modulating and demodulating device. it can modulate ur raw data in digital packets and can send it to other place by modulating process and vice versa in de-modulating process.