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Very High Bitrate Digital Subscriber Line or VDSL/VHDSL is an improved version of the technology, ADSL or Asymmetric Digital Subscriber Line, which we use to connect to the internet. They are different in how they are implemented so you probably cannot use the equipment of one for the other. The most significant difference between the two technologies that is most relevant to the use is speed. ADSL can reach maximum speeds of 8mbps download and 1mbps for upload. In comparison, VDSL can have up to 52mbps for download and 16mbps for upload.
Because of the extremely high speeds that VDSL can accommodate, it is being looked at as a good prospective technology for accommodating high bandwidth applications like VoIP telephony and even HDTV transmission, which ADSL is not capable of. Another very useful feature of VDSL stems from the fact that it uses 7 different frequency bands for the transmission of data. The user then has the power to customize whether each frequency band would be used for download or upload. This kind of flexibility is very nice in case you need to host certain files that are to be downloaded by a lot of people.
The most major drawback for VDSL is the distance it needs to be from the telephone exchange. Within 300m, you may still get close to maximum speed but beyond that, the line quality and the speed deteriorates rather quickly. Because of this, ADSL is still preferable unless you live extremely close to the telephone exchange of the company that you are subscribed to. Most VDSL subscribers are companies who need a very fast server and would often place their own servers in very close proximity.
Due to the limitations of VDSL and its high price, its expansion is not as prolific as that of ADSL. VDSL is only widespread in countries like South Korea and Japan. While other countries also have VDSL offerings, it is only handled from a few companies; mostly one or two in most countries. In comparison, ADSL is very widely used and all countries that offer high speed internet offer ADSL
Wiki User
∙ 12y ago
Wiki User
∙ 16y agoA cable modem is a rather broad term and may vary in technical specification depending on supplier. In general cables modems connect to a dedicated cable and offer internet services, possibly along side a cable TV service.
ADSL is a specific technology used to deliver high speed data services on an existing telephone line. The internet service is sent at specific frequencies and are filtered by the ADSL modem.
If you are looking to buy a modem you need to find out what type you need. The best way to do this is to call your ISP.
Wiki User
∙ 13y agoADSL has speeds of 8mbit/s download and 1mbit/s upload
ADSL2 has speeds of 12mbit/s download and 1.3mbit/s upload
ADSL2 uses imporved modulation techniques over adsl
Wiki User
∙ 15y agoadsl 2 + is used for high speed internet.
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Could you use 2 adsl modem to your home?
If you have two adsl lines then yes you can use two modems. Two modems on one line won't work. Just get a router to expand your network or up your broadband speed if available.
Can I Use bigpond 2wire modems on other providers?
I don't know whether you can use them as ADSL/ADSL2+ modems, but I'm sure it's worth a try. What you're very unlikely to be able to do is use the two wire capability - Bigpond has had the VOIP capability deleted from the firmware. This was on a news site I read 2 minutes ago.
Five common technologies available for establishing internet connectivity?
5 common technique are ADSL ADSL2+ CABLE WIRELESS ISDN Another 5 techniques 1. WIRELESS ROUTER 2. SWITCH OR HUB 3. NETWORK CARD/NETWORK ADAPTER 4. MULTILINKING MODEMS 5. SATELLITE BROADBAND Full meaning DSL: Digital Subscriber Line ADSL: Asymmetric Digital Subscriber Line ISDN: Integrated Service Digital Network
What the difference between 2 and - 7?
-5
What is the distance limit from the central office for ADSL service?
2 miles
How do you reduce the time between packets being sent so that you may improve latency for a typical ADSL 2 network telstra with a thompson router?
you put pockets on them
What is the difference between 2-pentanol from 3-pentanol?
What is the difference between 2-pentanol from 3-pentanol?
What is the difference between halo 2 and halo 2 1.5?
there is no difference
How do you measure phase difference between 2 pendulums?
You can measure the phase difference between 2 pendulums by measuring the distance between the two. The amount it comes out to will be the difference.
What is the difference between -2 and -4?
2
What is the difference between -2 and 23?
The difference is... 25
What if your company has decided to order adsl from its local telecommumications carrier you call the carrier and find out that your office is located 17000 feet from the nearest co given adsl potenti?
Depends. You need to find out if your local carrier supports ADSL 2+ or not. 2+ DSL can go up to 30000 feet. The speed is dependent upon the quality of the line, but i have installed many 3.0 mbs DSL lines at 17k feet. You should have no problem getting 3.0 mbs service if the carrier has the ADSL 2+ technology in place.
