wind speed train

Archive for the ‘dsl speed’ Category

DSL broadband technology supplies significantly faster data transfer speeds than dial-up Internet, without a huge investment. It is a cost effective and convenient permanent connection.

What is DSL Broadband Technology?

Digital Subscriber Line (DSL) is a proven standard ‘always on’ alternative to Integrated Services Digital Network (ISDN) and other leased line options, with affordable installation and service costs. Simply installing DSL on your existing phone line and purchasing a DSL modem/router allows businesses of all sizes to access high speed broadband at a relatively low cost.

DSL refers to technology and equipment deployed on the existing copper wire telephone infrastructure to enable multi-channel, high speed access. The single twisted-pair phone line is converted to enable it to be used for high-speed data transmission, without disrupting the telephone signal.

Copper wire lines are designed to carry voice or modem signals of a frequency band up to 3.4 kHz, providing maximum data speeds of 56kbps. With broadband technology, higher data speeds are possible by utilising a broader range of frequencies. Each range of frequencies acts as a separate channel on the same copper wire to enable additional data to be transmitted, providing greater bandwidth availabilities for business applications.

Asymmetrical (ADSL) VS Symmetric (SDSL)

ADSL allows data to be transferred at different speeds: the downstream (downloading) data speeds are faster than upstream (uploading) data speeds.

SDSL allows data to be transferred at identical speeds both downstream and upstream with guaranteed throughput. For data applications needing high-upstream bit rates, such as Voice over IP, symmetric DSL delivers a fully inter-operable solution.

e most cost effective high-speed Internet connections is DSL (Digital Subscriber Line). (Asymmetric Digital Subscriber Line) are the most prominent.There are different types of DSL. SDSL (Single in-line Digital Subscriber line a.k.a Symmetric DSL) and ADSL ADSL is the most widely used in residential services and can be a cost effective solution for small businesses depending on their Internet access requirements. ADSL allows for a faster download than upload speed from the ISP. As most users typically download more than upload. ADSL also allows one to use the phone for voice conversations at the same time. SDSL allows for equal download and upload speed. SDSL is mostly used in small businesses that require the transfer of larger files and uploading of information to remote hosts and servers. No matter which type is used DSL works off the same basic principles. DSL uses POTS (Plain Old Telephone) lines already installed on the premises to transfer data. These POTS lines do not use near the capacity they are able to carry when carrying voice conversations. DSL uses this excess capacity to carry data to and from the Internet without disturbing analog phone conversations. There are two different standards used for ADSL. One is the official ANSI standard called DMTCAP (Discrete Multi-Tone) and is the standard used on most installs today. The other standard is (Carrier less Amplitude/Phase), which was used on earlier installations and is sometimes still used today. To make a long explanation short, CAP standard divides the DSL signal on the telephone line into three distinct bands: Voice, Upload, and Download. DMT standard basically divides the POTS lines into 247 separate channels and passes your voice and data over the 247 separate channels. DMT is much more complex than this explanation lets on, but it is the simplest way to explain it that I know. That being said DMT is much more difficult to implement than CAP. To end this article we will talk about the advantages and disadvantages of DSL. Advantages: 1.) With DSL you can leave your Internet connection open and still use the phone line for voice calls. 2.) DSL speed is much higher than regular dial-up modems. 3.) Doesn’t necessarily require new wiring; it can use the phone line you already have. 4.) The company offering DSL usually offers the modem at no extra charge as part of the installation. Disadvantages: 1.) The DSL connection works better when you are closer the Central Office. 2.) The DSL connection is faster for receiving data than it is for sending. 3.) DSL service is not available everywhere.

For people who live outside the city limits and wish to catch up with the rest of the United States in the use of the internet, options are often very limited. DSL and cable internet services rarely extend too far outside the city limits in rural areas, so most of us who live out in the country have to resort to one of two things: dial-up service or satellite internet service.

Most of us know that dial-up service was the original way to get on the internet and unless you had two separate phone lines in your house, if you wanted to surf the internet, you had to keep your household phone line tied up as long as you were on it. For people who run businesses at home, this can be quite the inconvenience. Not only that, but dial-up is the slowest of all the modes of internet transportation and as soon as you start to dial a number on the phone line the internet is using, it disconnects and instantly ends all file transfers and stops any pages that were loading on your browser.

Satellite internet service will give you and your family all the benefits of dsl and cable internet service that people who live closer to towns and cities typically enjoy. The speed is just as high and the great thing about all broadband internet service types like this is the fact that it does not use a phone line.

Even though satellite internet service can cost more than other types of service, it is starting to gradually go down in price just like other types of broadband. This means that soon, it will be very affordable for families who live on farms or just a few hundred feet too far from where DSL or cable service ends.

Installation can be expensive, but some internet providers will allow you to skip the initial installation fee if you agree to pay a higher monthly fee for a certain period of time. This can be convenient if you cannot come up with the money to have the system installed all at once. An alternative to this would be to save up the money it costs for the installation, but sometimes it seems more convenient to just pay a little extra every month and skip the lump sum payment of the installation altogether. The choice is yours, but the only real option for those of us who live too far outside of town to acquire DSL or cable internet service, satellite, for now, is the only solution.