Asymmetric Digital Subscriber Line (ADSL) is a type of DSL technology that is used to connect to the Internet. With ADSL, more data can be sent over existing copper lines compared to conventional modem lines. In this tipps + tricks article, you can find out what that means for you as a customer, in addition to higher bandwidth.
What is ADSL?
ADSL is a transmission method for a broadband Internet connection via the telephone lines already available in the house. With the introduction of ADSL, the decisive advantage was that the existing telephone connections could continue to be used while ADSL was being used. Important for you to note: The term "ADSL" is used only by professionals and is synonymous with the actual DSL ( D igital S ubscriber L ine ). The advertised name " A symmetric D igital S ubscriber L ine " just basically means that the upload and download speed are asymmetrical, so differ..
For example, if you do a speed test of your Internet speed, it becomes apparent that download and upload differ in terms of bandwidth. ADSL connections enable download speeds of up to 8 Mbit / s and upload speeds of up to 1 Mbit / s. The older ADSL has now been replaced by newer technologies such as ADSL2 and ADSL2 +. Download speeds of 12 Mbit / s to a maximum of 24 Mbit / s can be achieved here.
What is the difference between ADSL, VDSL and DSL?
In addition to ADSL and its further development, ADSL2, there is also VDSL and DSL. ADSL and classic DSL are mostly used synonymously and provide the Internet via copper cables. On the one hand, this degrades the signal quality and, as the distance from the exchange increases, it can result in losses in the download process. Do you share your ADSL connection with several people? This can also have a negative impact on the speed..
VDSL is V ery H igh S peed D igital S ubscriber L ine , and is a DSL technology that significantly higher data transmission rates provides as ADSL or ADSL2. For the last piece to the customer, VDSL uses a so-called cable splitter that is connected to the fiber optic network. Copper lines are only used for the last stretch to the customer. This compensates for signal interference and loss of speed and speeds up to 100 Mbit / s in the download and up to 40 Mbit / s in the upload - VDSL is correspondingly fast. You can find out whether VDSL is available at your location with the DSL availability tool on telekom.de testing. If you are offered speeds higher than 24 Mbit / s, VDSL is available at your location.
characteristic
| ADSL | VDSL |
| designation | Asymmetric Digital Subscriber Line | Very High Speed Digital Subscriber Line |
| Download speed | up to 24 Mbit / s with ADSL2 + | up to 250 Mbit |
| Upload speed | up to 3.5 Mbit / s with ADSL2 + | up to 40 Mbit / s |
| Areas of application | Private household, sufficient download rate for streaming | Higher download rates benefit IPTV, as well as faster surfing and streaming |
| Spread | Larger expansion, especially in rural regions, many connections still run via ADSL | Lower spread, even in rural regions fiber optic networks are still rare |
Eigenschaft
| ADSL | VDSL |
| Bezeichnung | Asymmetric Digital Subscriber Line | Very High Speed Digital Subscriber Line |
| Geschwindigkeit im Download | bis zu 24 Mbit/s mit ADSL2+ | bis zu 250 MBit |
| Geschwindigkeit im Upload | bis zu 3,5 Mbit/s mit ADSL2+ | bis zu 40 Mbit/s |
| Anwendungsbereiche | Privater Haushalt, ausreichende Downloadrate für Streaming | Höhere Downloadrate begünstigt IPTV, sowie schnelleres Surfen und Streamen |
| Ausbreitung | Größere Ausbreitung, besonders in ländlichen Regionen laufen viele Anschlüsse noch über ADSL | Niedrigere Ausbreitung, auch in ländlichen Regionen sind Glasfasernetze noch selten |