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Digital Subscriber Line Access Multiplexer (DSLAM)
White Papers A digital subscriber line access multiplexer (DSLAM) delivers exceptionally high-speed data transmission over existing copper telephone lines. A DSLAM separates the voice-frequency signals from the high-speed data traffic and controls and routes...
[December 4, 2003, 23:00]
G.SHDSL: Faster DSL means faster downloads
News G.SHDSL is short for the formal single-pair, high-bit-rate digital subscriber line, more casually known as symmetric high-speed digital subscriber line. Some European communications carriers are using the faster DSL (digital subscriber line...
[September 21, 2001, 15:08]
SDSL: Step forward or back for broadband?
News SDSL stands for symmetric digital subscriber line and it is being targeted predominantly at small- to medium-sized enterprises (SMEs). It differs in several ways from its better known cousin, ADSL (asymmetric digital subscriber line), which is...
[March 18, 2004, 9:20]
Trouble in DSL's broadband paradise
News Digital Subscriber Line service, which promises to provide consumers with a path to broadband happiness, is proving it can be its own special kind of hell. Complaints of late hookups, poor connections, flaky email, clueless tech support and...
[October 26, 1999, 13:44]
Broadband boom set to transform Britain
News New studies show a boom in DSL (digital subscriber line) connections and broadband satellite dishes coming to Europe. Research firm IDC found the worldwide DSL subscriber base jumped 447 percent from 1999 to 2000, reaching 4.5 million connections...
[February 9, 2001, 16:18]
Breaking the Physical Barriers With Electronic Dynamically Compensating Optics (eDCO)
White Papers However, their deployment requires the implementation of emerging technologies (such as Passive Optical Networks, ultra high-speed Digital Subscriber Line (DSL), Resilient Packet Ring, etc.and the use of multiple network topologies to meet...
[September 15, 2007, 1:01]
Understanding xDSL
White Papers xDSL is a term for Broadband Access technologies based on Digital Subscriber Line (DSL) technology; "x" signifies that there are various flavors of DSL.xDSL provides always-on, high-speed data services over existing copper wires to residential and...
[December 23, 2005, 0:01]
Solutions for ADSL Line Interfaces
White Papers Asymmetric Digital Subscriber Line (ADSL) is a modem technology converting existing twisted-pair telephone lines into access paths for multimedia and high-speed data communications. After a short overview of ADSL, this paper focuses on implementing...
[February 16, 2005, 2:00]
Performance Evaluation of the IEEE 802.16a Physical Layer Using Simulation
White Papers Fixed Broadband Wireless Access (BWA) is a technology that offers high-speed voice, video and data services for the "last mile," which is presently dominated by the cable and digital subscriber line (DSL) technologies.
[January 21, 2005, 2:00]
BT bets on business broadband for rural consumers
News The service is based on existing Single-Pair High-speed Digital Subscriber Line (SHDSL technology) which has been proposed as an alternative to ADSL since 2001. BT is testing fixed-line broadband technology which it says could help achieve...
[September 15, 2009, 17:22]
BT holding back DSL say rivals
News HDSL (High bit rate Digital Subscriber Line) and SDSL (Synchronous Digital Subscriber Line) are competing versions of DSL. Broadband services -- offering high speed Internet access -- will be delivered via DSL technologies to both consumers and...
[April 19, 2000, 7:05]
Microsoft and Qwest ink US DSL pact
News Like many communications companies, Qwest has been pursuing ways to drive growth in its digital subscriber line business. In turn, MSN said it will purchase from Qwest high-speed network capacity, digital subscriber lines, dial ports and billing...
[April 26, 2001, 14:53]
US Baby Bells rattle ISPs
News The Bell companies have been invigorated by the troubles facing the competitive industry," said Jason Oxman, senior counsel for Covad Communications, a DSL (digital subscriber line) provider that offers service to ISPs and directly to ordinary...
[May 16, 2001, 16:49]
US telecoms regulators reveal contentious vision
News But the commission left in place many rules that force the phone companies to share their existing networks for voice and DSL (digital subscriber line) service, ensuring continued competition in local phone services from companies such as AT&T.
[August 22, 2003, 11:20]
High-speed is big bucks - in the US at least
News Last week, Bell Atlantic Corp.announced plans to offer high-speed access to America Online Inc.through high-speed phone technology known as asynchronous digital subscriber line or ADSL. At Home, a high-speed Internet service provider backed by...
[January 20, 1999, 9:20]
SDSL reaches Glasgow
News Scotland On Line announced on Thursday that it is launching a 2Mb SDSL (symmetrical digital subscriber line) service in Glasgow, based on a wholesale SDSL product supplied by Fibernet. The launch of this new SDSL service has the potential to...
[September 26, 2002, 17:00]
Superfast DSL shows its pace
News Aimed at in-building and densely populated urban applications, VDSL -- very high speed digital subscriber line -- is designed to connect buildings through telephone lines to nearby hubs in exchanges, or on the street, containing fibre backbones.
[March 11, 2002, 14:00]
The Net's new neighbourhood watch
News Most users connected to the Internet through a cable modem or a digital-subscriber line are still unaware of the potential for regular attacks on their systems. In an ISAC, every corporate subscriber to the service must digitally sign any submissions.
[December 6, 2000, 12:09]
Napster decision could have industry repercussions
News To get the songs in the first place, many customers considered a high-speed cable modem or DSL (digital subscriber line) connection as standard equipment. Although it may be difficult to track a direct correlation between the decline of Napster and...
[March 14, 2001, 10:11]
Broadband prices to halve by 1 April
News ADSL (asynchronous digital subscriber line) turns standard phone lines into high-speed digital connections. See the Broadband News Section for the latest on cable modems, ADSL, satellite and other high-speed access technologies, including a...
[February 26, 2002, 8:49]
