donkey42
plank
DSL (digital subscriber line, Asymmetric Digital Subscriber Line)[ot]it was Asynchronous Digital Subscriber Line & is sometimes still referred to[/ot]Currently ADSL is dominating the DSL market
& it work by splitting the phone line in to 2 virtual phone lines & the voice communication (talking) only uses 0 to 3,400 Hertz (cycles per second) this range of frequencies is tiny
For example, compare this to the range of most stereo speakers, which cover from roughly 20 Hertz to 20,000 Htz. And the wires themselves have the potential to handle frequencies up to several million Hertz in most cases.
this a leaves a great deal of bandwidth to transmit data (download), faxes & VoIP connections etc. etc.
ADSL is a distance-sensitive technology, as the connection's length increases, the signal quality decreases and the connection speed goes down. for this reason, ADSL customers may see speeds far below the promised maximums, while customers nearer the central office have faster connections and may see extremely high speeds in the future.
ADSL is currently available in three download speeds of: 512Kb/sec, 1Mb/sec and 2Mb/s These download speeds are approximately 10 to 40 times faster than a standard dialup modem. In practice, the best speeds widely offered today are 1.5 Mbps downstream, with upstream speeds varying between 64 and 640Kbp/s.
basically that means, the further you are from the telephone exchange, the slower the DSL connection will be
there are a few DSL connections
& it work by splitting the phone line in to 2 virtual phone lines & the voice communication (talking) only uses 0 to 3,400 Hertz (cycles per second) this range of frequencies is tiny
For example, compare this to the range of most stereo speakers, which cover from roughly 20 Hertz to 20,000 Htz. And the wires themselves have the potential to handle frequencies up to several million Hertz in most cases.
this a leaves a great deal of bandwidth to transmit data (download), faxes & VoIP connections etc. etc.
ADSL is a distance-sensitive technology, as the connection's length increases, the signal quality decreases and the connection speed goes down. for this reason, ADSL customers may see speeds far below the promised maximums, while customers nearer the central office have faster connections and may see extremely high speeds in the future.
ADSL is currently available in three download speeds of: 512Kb/sec, 1Mb/sec and 2Mb/s These download speeds are approximately 10 to 40 times faster than a standard dialup modem. In practice, the best speeds widely offered today are 1.5 Mbps downstream, with upstream speeds varying between 64 and 640Kbp/s.
basically that means, the further you are from the telephone exchange, the slower the DSL connection will be
there are a few DSL connections
- VDSL - This is a fast connection, but works only over a short distance.
- SDSL - This connection, used mainly by small businesses, doesn't allow you to use the phone at the same time, but the speed of receiving and sending data is the same.
- RADSL - This is a variation of ADSL, but the modem can adjust the speed of the connection depending on the length and quality of the line.