Internet Speed

One of the first decisions to be made is what kind of connection you want. There are several options for setting up high-speed services, which all come under the broadband umbrella. However, the type of broadband service you need and have access to will be determined by your speed requirements, budget, and the location (city or regional) of your home or office.

 ISDN
Meaning integrated services digital network, a standard to send video, voice and data over a digital telephone line. Isdn is a circuit-switched telephone network system, designed to allow digital transmission of voice and data over ordinary telephone, resulting in better voice quality than an analog phone. One of the major use cases is Internet access, where ISDN typically provides a maximum of 128 kbit/s (which cannot be considered to be a broadband speed).
In a videoconference, ISDN provides simultaneous voice, video, and text transmission between individual desktop videoconferencing systems and group (room) videoconferencing systems.
 
DSL
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.
Dsl provide digital data transmission over the wires of a local telephone network.
Typically, the download speed of consumer DSL services ranges from 256 kilobits per second (kbit/s) to 24,000 kbit/s, depending on DSL technology, line conditions and service level implemented. Typically, upload speed is lower than download speed for Asymmetric Digital Subscriber Line (ADSL) and equal to download speed for Symmetric Digital Subscriber Line (SDSL).
 
Cable
Cable is considered to be more stable than ADSL, with consistently high speeds. Many  providers offer  bundled deals with your phone and/or cable TV, which can save you quite a bit of cash in the long run. However, the installation process is more complex than ADSL, and may require a tradesman to run a cable into your house from out in the street. The fibre networks that bring you cable TV at home can be more than an addition to your viewing options — it can also be your means to fast Internet access.
 
Satellite
Satellite is often touted as an alternative to fixed-line access such as cable or ADSLand  has succeeded in providing much faster and often more reliable Internet service, particularly in rural and regional areas, than the standard public system telephone network. Internet access via satellite is available worldwide, including vessels at sea and mobile land vehicles
 
Wireless
This data-only system utilises a small base station connected to a wired network or to the Internet and transmits data wirelessly to multiple workstations, which can be desktops, notebooks or even handheld PCs. Each base station can service several users equipped with wireless receiver cards in their computer, and base stations can be overlapped to allow several hundred users to access the network or Internet.