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modem
modem
modem Short for modulator and demodulator. A device that can convert a digital bit stream into an analog signal suitable for transmission over some analog communication channel (
modulation), and can convert incoming analog signals back into digital signals (
demodulation). Modems are used to connect digital devices across analog transmission lines. Most modems are designed to match specific national or international standards so that data communication equipment from one manufacturer can talk to that of another.
Modems can be packaged in many ways: as
add-in cards or
PC cards allowing personal computers to communicate over ordinary phone lines, as small external units, or as rack-mounted sets for large applications requiring many simultaneous connections. Modern modems, for attachment to a normal telephone line, can handle data at 56 000 bps, which is about the upper limit attainable over voice-frequency channels. Still faster modems for use in areas where telephone exchanges are equipped with
broadband are available, allowing users to connect at over 500 kbps using ADSL or similar services.
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Modem sellers hip op policies.(the Consumer Electronics Retailers Coalition backs the Cable Modem Coalition's claims about cable operator policies)
Magazine article from: Multichannel News; 2/3/2003; ; 700+ words
; ...discounts to cable-modem customers who buy their own modems, minimizing any...and the cost of modems in the retail space...Inc. is hard on modem makers, requiring...customers who buy their modems, which ranges...incentive to purchase a modem," Denning added...
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Modems: Still gathering speed
Magazine article from: Telecommunications; 2/1/1996; ; 700+ words
; ...innovations driving the modem's growth such as the...early 1995 of v.34 modems, and the strong uptake...users now have a PCMCIA modem. However, recently...exciting development in modem technology for many years...is significant. DSVD modems give users the line optimising...
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Getting modem working one of the biggest challenges for users. (Originated from Knight-Ridder Newspapers)
Newspaper article from: Knight Ridder/Tribune News Service; 9/1/1993; ; 700+ words
; ...someone else's, modem manufacturers build...features into their modems that make them work...internal 2,400-bps modems, often with a fax modem on the same card...understood by many modem users. Rest assured, though, that all modems require some sort...
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Blazing modems.(28.8-Kbps modems)(Buyers Guide)
Magazine article from: Macworld; 5/1/1995; ; 700+ words
; ...the fall of 1994, modem makers were already selling modems using that technology...of 14.4-Kbps modems found, owning a fast modem doesn't mean you...after 14.4-Kbps modems became popular and inexpensive, the modem infrastructure is...
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Modem power. (includes a related article defining communications terms) (a correction to this article appears in the Jan. 1992 issue, page 333) (Computer Shopper's Guide: Modems) (Buyers Guide)
Magazine article from: Computer Shopper; 10/1/1991; ; 700+ words
; ...telephone lines. Modems translawte digital...In fact, the word modem is just a contraction...description of a modem's work. The best of today's modems take advantage of...SPARE Neither men nor modems are islands. Above...with others. One modem would do the world...
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Modems take Route 56. (new 56Kbps modem technologies) (Technology Information)(Technical)
Magazine article from: Computer Shopper; 6/1/1997; ; 700+ words
; ...factors that limit modem speeds. In effect...communications channel. Modems operating at 56Kbps...purely digital modems to the PSTN. As...on your 56Kbps modem--comes in as...from all previous modem standards in that 56Kbps modems are capable only...
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Modems' main bout: Rockwell put to test
Magazine article from: Orange County Business Journal; 11/25/1996; ; 700+ words
; ...Semiconductor Systems and modem giant U.S. Robotics...dueling displays of modems that allow for faster...supremacy in the modem industry. Rockwell...of the world's modems--more than 100...themselves, to buy its modems; Rockwell, meanwhile...can persuade other modem makers--as well...
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Modem technologies: the choice is yours. (includes related article about 56-kbps modems)(Cover Story)
Magazine article from: EDN; 11/6/1997; ; 700+ words
; ...thinking about a merged modem/audio subsystem. Modems are standard in almost...emerging 56-kbps-modem technologies (see...herring: 56-kbps modems"). Evaluating...functions; and * HSP modems that execute both the modem algorithms and the...
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Modems make progress at show, but vendors still face hurdles. (1996 National Cable Television Association convention)
Magazine article from: Multichannel News; 5/6/1996; ; 700+ words
; ...starting lineup in the cable-modem race, clarified that announcement...and development into cable modems and associated standards...off a prototype cable-modem card that slides into the...today's internal phone modems, Frank Gill, executive...
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Modems' Last Stand : Analog modems will soon be obsolete--here's what's next.(ISDN, DSL and cable modems compared)(Technology Information)
Magazine article from: Macworld; 5/1/1999; ; 700+ words
; ...likely still have a 56K modem in your life for the...Macworld Lab tested five 56K modems to find which one is...sidebar, "The Last Modem You'll Ever Buy...sometimes called an ISDN modem) or an ISDN-capable...port used to connect modems and printers), while...
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Modem
Encyclopedia entry from: Encyclopedia of Small Business
...with the fastest modems transmitting at 56K...second). An internal modem is housed within the...data sent between two modems, which the receiving modem then restores to its original form. Individual modems vary in the types of...
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modem
Book article from: The Columbia Encyclopedia, Sixth Edition
...communication. Wireless modems send or receive data...radio signal. A fax modem enables a computer...or another fax modem. Modems were first used with...personal computer modem in 1977, marking...In the beginning modems were used primarily...
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modem ready
Book article from: A Dictionary of the Internet
modem ready A term found on the label of some MODEMS meaning that the modem has been switched on and is ready to receive or transmit data.
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cable modem
Book article from: The Oxford Pocket Dictionary of Current English
...xB7;ble mo·dem • n. a type of modem that connects a computer or local network to broadband...xA0; the service connection made via a cable modem: a broadband Internet connection, such as DSL or cable modem.
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FAX modem
Book article from: A Dictionary of the Internet
FAX modem A MODEM which has been designed for the sending of FAXes, such modems are also capable of being used in connection with DIAL-UP ACCESS although, they have normally been optimized for FAX use.
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