ADSL is abbreviation of Asymmetric digital Subscriber Line, one technology which memungkinan high speed data is transferred through telephone wire. ADSL enables to accept data until speed 1.5 9Mbps (downstream's speed) and transfers data at a speed 16 640Kbps (upstream's speed).
ADSL divides frequency of thread that utilized by assumption a large part Internet user will more a lot of take (download) data of Internet than transferring (upload) to Internet. Therefore, data speed of ordinary Internet around three until four speed time go to Internet. Since upstream's speed and unegual downstream utilized by Asymmetric's terminology.
There are several reference applicabling to knows deeper about technology ADSL, severally among those is,
http://www. dslforum. org / is index. shtml is ADSL'S Forum
http://electronics. howstuffworks. com / dsl. htm How DSL'S Ways Of Working
http://www. cs. tut. fi / tlt / stuff / adsl / pt_adsl. html Intro goes to ADSL'S technology
http://www. rhapsodyk. net / adsl / HOWTO / ADSL at Linux
http://www. kitz. co. uk / adsl / adsl. htm is ADSL'S Encyclopaedia
 Severally ADSL'S gain
* You can most interlocking go to Internet, and regular gets to utilize telephone to accept / rings.
* Speed much higher of ordinary modem.
* Not necessarily new telephone wire, ADSL enables mengggunakan aught telephone wire.
* Severally ISP ADSL will give ADSL'S modem as part of installation.
 Severally disadvantaged ADSL.
* Thread ADSL will work perfectly if our location last close to sentral rings. At least in distance 2 3 cable disquisition km usually enough safe to be utilized ADSL until 8Mbps's vicinity speed. DSL'S technology that can just send to get at a speed very tall s / d. 100Mbps, obviously to very short distance.
* ADSL'S thread faster to accept data than transfers data via Internet.
* Old copper cable gets to down thread quality and downs speed.
* Upon rainy season, water really bother telephone wire quality. Evenless if flooding and menenggelamkan is Telephone Wire House, at secures will add cable attenuation and will reduce ADSL'S thread quality.
* Service ADSL not is at no region telephone wire.