14 Jul

Modem, a short form for modulator/demodulator, is a tool that permits one computer to talk with another one over a standard telephone line. Modems act as a type of exponent between a computer as well as the telephone line. 

Computers transmit digital data, articulated as electrical impulses, while telephones transmit voice frequencies as analog signals. To transmit digital data, the sending modem must first modulate, or programme, a computer's digital signal into an analog signal that can voyage over the phone line. 

The receiving xfinity telephone modem must then demodulate, or else decode, the analog signal back into a digital signal familiar to a computer. 


A modem transmits data in bits per second (bps), with the fastest modems transmitting at 56K (kilobits per second). An interior xfinity triple play modem is housed within the computer itself, while an external modern is a separate device that is connected to the computer through a cable. 

A diversity of different rules, called protocols, governs the change of data to and from digital and analog. These protocols also govern mistake correction along with data compression. Error correction is essential to detect and correct data that may have become mislaid or garbled as the consequence of a poor telephone connection. Data density speeds the data transfer by eliminating any outmoded data sent between two modems, which the receiving modem then reinstates to its original form. Individual modems diverge in the types of protocols they support, depending on such factors as producer and age. 

Communications software allows an xfinity telephone modem to execute several tasks necessary to complete a session of sending as well as receiving data. To start a modem session, the user issues the command appropriate to the software being utilized, and then the software takes over and begins the complicated procedure of opening the session, transferring the data, as well as closing the session. 

To open the session, the software dials the receiving xfinity triple play modem and waits for an answering signal from it. Once the two modems have established a connection, they engage in a process called "handshaking," wherein they exchange information about the types of protocols each uses, ultimately agreeing to utilize a set common to both. For instance, if one modem supports a current set of protocols then does the other, the first modem will agree to use the earlier set so that each is sending data at the similar rate, with error correction as well as data compression appropriate to those protocols. The handshaking procedure itself is governed by its own protocol.

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