DSL modem

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DSL modem

A device used to connect a single computer or a network to a telephone company digital subscriber line (DSL) service for Internet access. Compared to analog dial-up, DSL significantly increases the bandwidth between the user's computer and the Internet. Download speeds have reached 10 Mbps and beyond, but the connection is asynchronous. In order to prevent users with lower-cost cable access from hosting high-traffic Web servers, the upload speed is approximately 10 times slower. Like cable Internet providers, telephone companies routinely change the user's IP address to prevent Web hosting (see DDNS).

Connect Via Ethernet or USB
DSL modems typically connect to the computer or network router via an Ethernet port; however, some DSL modems have a USB port for hookup to the computer but not the network. See DSL and cable/DSL gateway.


DSL Modem and Wireless Router
This Qwest DSL modem includes a wireless router. After installation, users can connect their computers to the Internet via Wi-Fi or an Ethernet cable. See wireless router.
References in periodicals archive ?
The Veritas992 contains both central office and remote terminal ADSL transceiver modules, enabling efficient testing of either CO or RT ADSL products.
Nasdaq: AWRE) today announced the world's first "plug and play" DMT-based ADSL transceiver module, the AW-910.
Centillium's CopperFlite CO chipset is a fully programmable multi-mode ADSL transceiver that consumes less than 1 watt of power.
Motorola's ADSL family of products includes the highly integrated CopperGold ADSL Transceiver (part # MC145650), the innovative, performance- optimizing CopperGold ADSL Line Driver (part # MC03AX1456), the powerful and resource-saving CopperGold Control Software, a wide array of microprocessors tailored for specific applications and development tools.
By emulating the customer premises ADSL modem or ADSL transceiver unit-remote (ATU-R), the TTC 350E+ synchronizes with the DSLAM (ATU-C) and reliably reports critical service parameters, including connect speed (bits per second), line capacity, and noise margins.
MC03AX1456) and produced by Motorola's Semiconductor Products Sector, this innovative device provides a single chip interface to Motorola's highly integrated, DMT-based CopperGold ADSL transceiver.
The central office and router solutions are based on a highly integrated ADSL transceiver and are designed to support exceptional density, enabling fast time to market via development tools and world class applications support.
413-compliant DMT ADSL transceiver, and incorporates all necessary DMT modulation, framing, error correction, interleaving and interleave RAM in a single 160-pin PQFP package.
The chip is built around an ARM(TM) 946ES RISC processor that embeds a complete ADSL transceiver and multiple LAN interfaces, allowing multiple network mediums to be used.
The Integrated/Voice Data (IVD) version of the chipset is the only available ADSL transceiver chipset with a fully integrated Plain Old Telephone System (POTS) splitter and support for baseband voice processing.
One ADSL transceiver is located at the telephone exchange and one at the subscriber's premises.