T3 connections are advanced versions of T1 and T2 broadband connections that provide high-speed broadband connectivity to large organizations as well as individual users. T3 connections consist of two receiving and two transmitting fiber optic cables that are capable of transmitting data at forty-five megabits per second.

These connections consist of 672 individual channels that are equivalent to an equal number of voice grade telephone lines and transmit data at sixty-four kilobits per second. Individual users can subscribe to some of these sub channels depending on their needs for downloading audio, video, and other multimedia content. A single T3 connection consisting of all individual channels can cost anywhere between four to fifteen thousand dollars depending on addition services provided with the connection.

T3 connections have helped call centers and contact centers provide uninterrupted services to its clients and customers. These services include answering customer queries and solving technical problems via different channels of communication such as e-mail, live chat, voice mail, and Internet telephony. These connections have enabled government agencies to effectively communicate plans, strategies, and other information during natural disasters and calamities. T3 connections form the backbone of advanced research organizations or laboratories that need to share vast amounts of data on a continuous basis.

T3 connections are often accompanied by additional services such as monitoring of connection circuits for latency, availability, and usage and notifying the user about congestions and outrages that might occur anytime. Other options provided to users may include value added services such as multiple self-managed e-mail boxes with Spam and virus filtering.

T3 connections are best suited for organizations that need an affordable way of maintaining high-speed connectivity within the organization and other entities such as customers, suppliers, and government agencies. Research is underway to add new technological innovations to T3 connections that will increase data transfer speed and reduce subscription costs.