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Modems

-- 8 Vendor Reports | 13 Products

ALSO CALLED: MOdulator/DEModulator, Asynchronous Modems, and 56 Kbps Modems
DEFINITION: A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device.

In recent years, the 2400 bits per second modem that could carry e-mail has become obsolete.  … 
Definition continues below.

Recent Vendor Reports on Modems
RS-232: A Key to Understanding Data Communications
sponsored by Global Knowledge
WHITE PAPER: Read this paper to learn the history and current application of RS-232, a standard that refers to two classes of devices: Data Terminal Equipment and Data Circuit Terminating Equipment.
Posted: 14 Oct 2008 | Published: 11 Oct 2008
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TOPICS:  Data Communications Services | Modems | Network Management | Routers | Software | Switches | Telephony Systems | Training and Educational Services | Troubleshooting
SRM-3A
sponsored by RAD Data Communications
PRODUCT OVERVIEW: The SRM-3A is an ultra-miniature asynchronous short range modem connecting full duplex asynchronous terminals to computers.
Posted: 31 Mar 2005 | Published: 01 Feb 2005
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TOPICS:  Modems
Promitel Carries Other Carriers across the Last Mile
sponsored by RAD Data Communications
CASE STUDY: Promitel installed an STM-16 SDH backbone network with seven main nodes in Barranquilla and five main nodes in Cartagena.
Posted: 31 Mar 2005 | Published: 01 Jan 2002
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TOPICS:  HP OpenView | Modems | Multiplexers
SRM-5AC, SRM-6AC
sponsored by RAD Data Communications
PRODUCT OVERVIEW: The miniature SRM-5AC and SRM-6AC are short range modems connecting full or half duplex asynchronous terminals to computers.
Posted: 31 Mar 2005 | Published: 01 Feb 2005
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TOPICS:  Modems
SRM-5A, SRM-6A, SRM-6L
sponsored by RAD Data Communications
PRODUCT OVERVIEW: The miniature SRM-5A, SRM-6A and SRM-6L are asynchronous short range modems connecting full duplex, asynchronous terminals to computers.
Posted: 31 Mar 2005 | Published: 01 Feb 2005
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TOPICS:  Modems
SRM-5SC, SRM-6SC
sponsored by RAD Data Communications
PRODUCT OVERVIEW: The miniature SRM-5SC and SRM-6SC are short range modems connecting full or half duplex synchronous terminals, controllers and computers in point-to-point or point-to-multipoint applications.
Posted: 30 Mar 2005 | Published: 01 Feb 2005
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TOPICS:  Modems
FOMi-E3, FOMi-T3
sponsored by RAD Data Communications
PRODUCT OVERVIEW: The FOMi-E3 and FOMi-T3 are high speed fiber optic modems that extend the transmission range of electrical E3 or T3 over fiber optic cables FOMi-E3 for E3 rates and FOMi-T3 for T3 rates.
Posted: 30 Mar 2005 | Published: 01 Feb 2005
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TOPICS:  Fiber Optic Networks | Modems
City of Burlington Uses RAD Equipment to Extend T1 Circuits over Fiber Optic Network
sponsored by RAD Data Communications
CASE STUDY: RAD's Optimux-4T1L units offered Burlington Telecom a simple and low cost way to transport four T1 circuits over a single fiber optic link.
Posted: 30 Mar 2005 | Published: 01 Jan 2004
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TOPICS:  Fiber Optic Networks | Modems | Multiplexers
 
MODEMS DEFINITION (continued): … A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device.

In recent years, the 2400 bits per second modem that could carry e-mail has become obsolete. 14.4 Kbps and 28.8 Kbps modems were temporary landing places on the way to the much higher bandwidth devices and carriers of tomorrow. From early 1998, most new personal computers came with 56 Kbps modems. By comparison, using a digital Integrated Services Digital Network adapter instead of a conventional modem, the same telephone wire can now carry up to 128 Kbps. With Digital Subscriber Line (DSL) systems, now being deployed in a number of communities, bandwidth on twisted-pair can be in the megabit range.
Modems definition sponsored by SearchMobileComputing.com, powered by WhatIs.com an online computer dictionary

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