The T3 or ‘Trunk Level 3’ Internet connection is capable of transmitting data at up to 44.7 million bits per second (mbps) over extremely high bandwidth equivalent to approximately 672 voice grade regular phone lines. The T3 connection, for copper, is similar in technology to a T1, but has a higher bandwidth through which you can transfer data to and from the Internet at a higher speed. A full T3 or DS3 line is equivalent to 28 T1 lines in terms of data transfer per unit of time, but must be customized accordingly for optimal benefit. A T3 circuit can also be fiber and so are most DS3 circuits these days. A fractional T3 Internet service is ideal for customers who need a data transfer of more than 6 Mbps (ideally 10 Mbps or more) and less than the full 45 Mbps of the T3 Internet line. The reason for this is the local loop for the T3 circuit, it is more expensive and financially, it does not make sense to get a fractional DS3 for less than 6 Mbps. A T3 line is used as a main network path by companies that use a lot of bandwidth. band, large commercial organizations and universities with high volume network data transfer, large corporations and government organizations.
Like the ‘trunk level 1’ Internet connection, T3 lines are often referred to as DS3 (digital signal level 3) lines, which are made up of two components: the main or local loop and the port. Primary or local T3 loops are more expensive than T1 loops because they allow more amounts of data to be transferred due to their higher bandwidth capacity. A T3 line comprises 672 individual channels and each of them can carry 64 Kbps. T3 service is also called ‘Digital Transmission Level 3’, because it can transmit any combination of data from audio and visual applications. In fact, a T3 circuit is a specific term that transmits data at 64 kbps on each of its 672 channels, while DS3 is a generic term that encompasses circuits with the same bandwidth. Both the T3 and DS3 lines have the potential to carry 672x 64 Kbps or 44.7 million bits per second (mbps).
A T1 line is used by small and medium-sized companies and is capable of transmitting text, graphics, sound and database files instantly; while a T3 line is suitable for a large workforce where large volumes of data can be transmitted, including video and audio files. In the case of T1 service, the transfer of audio and video files will take longer than a T3 connection. Through an ordinary residential modem or a telephone line it is not possible to transmit audio and visual data simultaneously. To send or receive any type of large or constant audiovisual files in undistorted form, you must rely on T3 Internet service, which provides a large amount of reliable, uninterrupted, hassle-free and high-speed data transfer.
T3 technology has two widely used applications in corporate networks: as an Internet link and as a means of adding multiple T1 lines to a physical access point. The first application acts as a single channel between two points on the web server and the Internet. The second application is a piped system, which works as a combination of T1 lines. The third application, which is less common than the other two, is used to connect a T3 Internet directly to a remote access controller. And this application helps to continue 672 simultaneous telephone connections over a physical link. The problem with copper-based point-to-point T3 lines is that it does not work with optical interfaces, unlike a fiber-based T3 / DS3 circuit.
To connect a large office of people to the public Internet, it is better to use a T3 line or a DS3 (Digital Signal Level 3) connection instead of other bandwidth services. T3 providers cater to customers who have needs for multiple T1 lines or need a large internet connection to transfer a large amount of data by providing a T3 connection. By using multiple T1 lines, you can get speed and a large amount of data transfer and it is more cost effective than a T3 line generally, but you cannot easily upgrade to a DS3 connection. Fractional T3 or DS3 connection is also available, which is not only cheaper than multi-megabit T1 service, but also guarantees a greater amount of data transfer at a higher speed. As the T3 connection consumes less time to send data over the Internet and VPN (Virtual Private Network), it greatly reduces telecommunication costs and also increases productivity in a company.
T3 lines are used primarily by Internet Service Providers (ISPs) that connect their customers to the Internet: local area network and wide area network. By implementing a state-of-the-art T3 service, the T3 provider has revolutionized Internet telecommunications and paved the way for point-to-point data transfer.