Types Of Internet Connections

Aa Technology grows so does the need for better and faster internet connections. Over the years the way content is presented via the web has also changed drastically. The need for speed has changed the options available to consumers and business alike interms of how fast we can connect to the internet.

Analog: Dial-Up Internet Access

Using a modem to connect your pc  to the inetrnet by dialling a phone number provided by your Internet Service Provider and conects to the network. Dial up is sent over a normal analog phone line and  the modem converts received analog data to digital data. Speeds range from 2400bps to 56kbs so in todays high speed world these connections have been replaced by cable and DSL.

ISDN- Integrated Services Digital Network

ISDN is an international communiocations standard for sending voice, video and data over digital telephone lines or normal telephone lines. Typical ISDN range from 64kbps to 128kbps.

B-ISDN - Broadband ISDN

Broadband ISDN is similar in function to ISDN but it transfers data over fiber optic telephone lines. SONET is the physical transport backbone of B-ISDN. Broadband ISDN has not been widely implemented

DSL- Digital Subscriver Line

DSL is a frequently refered to as an always on connection because it uses exisiting 2 wire copper telephone line connected to the premise so service is delivered simultaneously with wired telephone service. It will not tie up your phone line as an analog connection does. The two main categories of DSL for home subscribers are ADSL and SDSL. All types of DSL technologies are refered to as xDSL. Speedcs can range from 128kbps to 9Mbps.

ADSL- Asymmetric Digistal Subscriber Line

ADSL is the most commonly deployed type of DSL, and supports data rates from 1.5mbps - 9mbps downstream and 16-640kbps upstream. AS always you will need an adsl modem.

ADSL+2 - ADSL Extension

An extension to ADSL broadband technology that provides subscribers with significantly faster download speeds when compared to traditional ADSL connections. ADSL+2 works in the same fashion as ADSL a special filter is installed on a subscriber's telephone line to split existing copper telephone lines (POTS) between regular telephone (voice) and ADSL+2. ADSL2+ service is most commonly offered in highly-populated metropolitan areas and subscribers must be in close geographical locations to the provider's central office to receive ADSL2+ service.

SDSL - Symmetric Digital Subscriber Line

Short for symmetric digital subscriber line, SDSL is a technology that allows more data to be sent over existing copper telephone lines (POTS). SDSL supports data rates up to 3 Mbps. SDSL works by sending digital pulses in the high-frequency area of telephone wires and cannot operate simultaneously with voice connections over the same wires. SDSL requires a special SDSL modem. SDSL is called symmetric because it supports the same data rates for upstream and downstream traffic.

Cable -  Broadband Internet Connection

Through the use of a cable modem you can have a broadband Internet connection that is designed to operate over cable TV lines. Cable Internet works by using TV channel space for data transmission, with certain channels used for downstream transmission, and other channels for upstream transmission. Because the coaxial cable used by cable TV provides much greater bandwidth than telephone lines, a cable modem can be used to achieve extremely fast access.  Cable providers typically implement a cap to limit capacity and accommodate more customers. Cable speeds range from 512 Kbps to 20 Mbps.

Wireless Internet Connections

Wireless Internet, or wireless broadband is one of the newest Internet connection types. Instead of using telephone or cable networks for your Internet connection, you use radio frequency bands. Wireless Internet provides an always-on connection which can be accessed from anywhere — as long as you geographically within a network coverage area. Wireless access is still considered to be relatively new, and it may be difficult to find a wireless service provider in some areas. It is typically more expensive and mainly available in metropolitan areas.

T-1 Lines – Leased Line

T-1 lines are a popular leased line option for businesses connecting to the Internet and for Internet Service Providers (ISPs) connecting to the Internet backbone. It is a dedicated phone connection supporting data rates of 1.544Mbps.  A T-1 line actually consists of 24 individual channels, each of which supports 64Kbits per second. Each 64Kbit/second channel can be configured to carry voice or data traffic. Most telephone companies allow you to buy just one or some of these individual channels. This is known as fractional T-1access. T-1 Lines support speeds of 1.544 Mbps. Fractional T-1 speeds are 64 Kbps per channel (up to 1.544 Mbps), depending on number of leased channels.

Bonded T -1

A bonded T-1is two or more T-1 lines that have been joined (bonded) together to increase bandwidth. Where a single T-1 provides approximately 1.5Mbps, two bonded T1s provide 3Mbps or 46 channels for voice or data. Two bonded T-1s allow you to use the full bandwidth of 3Mbps where two individual T-1s can still only use a maximum of 1.5Mbps at one time. To be bonded the T-1 must run into the same router at the end, meaning they must run to the same ISP.  Typical Bonded T-1 (two bonded T-1 lines) speed is around 3 Mbps.

T3 Dedicated Leased Lines

T-3 lines are dedicated phone connections supporting data rates of about 43 to 45 Mbps. It too is a popular leased line option. A T-3 line actually consists of 672 individual channels, each of which supports 64 Kbps. T-3 lines are used mainly by Internet Service Providers (ISPs) connecting to the Internet backbone and for the backbone itself. Typical T-3 supports speeds ranging from 43 to 45 Mbps.

OC3 Optical Carrier

Short for Optical Carrier, level 3 it is used to specify the speed of fiber optic networks conforming to the SONET standard. OC3 is typically used as a fiber optic backbone for large networks with large voice, data, video, and traffic needs. Speeds are 155.52 Mbps, or roughly the speed of 100 T1 lines.

Internet over Satelite

Internet over Satellite(IoS) allows a user to access the Internet via a satellite that orbits the earth. A satellite is placed at a static point above the earth's surface, in a fixed position. Because of the enormous distances signals must travel from the earth up to the satellite and back again, IoS is slightly slower than high-speed terrestrial connections over copper or fiber optic cables. Typical Internet over satellite connection speeds (standard IP services) average around 492 up to 512 Kbps.

Ethernet First Mile (EFM) services are reducing in price. The difference in cost between contended business broadband that is subject to peaks in demand and a fixed bandwidth high speed data circuit with guaranteed levels of service is becoming ever lower.

If you are looking for a fast, secure connection between your business sites or between your office and a data centre, link them on a private network with our high-speed Ethernet Services.

There are three levels of Ethernet services available from Worksmart.

Business Ethernet

Higher-grade un-contended internet facing data circuits with speeds from 2Mbps to 10 GB and business grade service level agreement levels. Services can either be delivered as Internet facing or point to point circuits, providing connectivity to data centre locations or between client sites.

Ethernet first Mile (EFM)

Un-contended Ethernet circuit delivered over copper to the client site. Speeds from 2Mbps to 10Mbps available supplied with a managed router monitored 24 x 7 x 365. Suitable for running mission critical VoIP traffic.

Fibre Ethernet

Un-contended Ethernet circuit delivered over fibre to the client site. Speeds from 10Mbps to 10Gbs available supplied with a managed router monitored 24 x 7 x 365 and 99.99% SLA guaranteed.


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