20-05-2013, 04:01 PM
Digital Subscriber Line – DSL
Digital Subscriber.ppt (Size: 50 KB / Downloads: 28)
DSL technology provides high-speed, broadband network connections to homes and small businesses.
DSL utilizes the same cabling used for normal telephones, but it can offer higher data rates through use of the digital modem technology.
DSL
DSL modems comprise the heart of this technology and the lines themselves are actually just plain telephone lines.
It's possible for DSL subscribers to share the same line for their digital and analog traffic play web + receive a call.
DSL Technology
Speed
DSL offers more than 100 times the network performance of a traditional analog modem.
the precise speed of a connection depends on the variety of xDSL deployed.
DSL is a distance-sensitive technology.
DSL availability of bandwidth
The actual network bandwidth a customer will receive from DSL in the home depends on the span of their telephone wiring.
The longer the line, the less bandwidth DSL can support.
Likewise, its thickness (wire gauge) can affect performance.
ADSL & G.Lite
Regular ADSL generally requires a technician visit to the client site to install the splitter device that divides the frequency spectrum for voice and data.
G.Lite does not require that this splitter be installed, but it does so at the expense of lower data rates.
SHDSL
Symmetric High-Bit-Rate DSL (SHDSL) attempts to improve on both HDSL and SDSL by only requiring a single line and by integrating low-level services of interest to small businesses.
SHDSL technology can transport data symmetrically at data rates from 192 Kbps to 2,320 Kbps.