T1 Data (Internet), an Introduction

Written by: Dennis Green - Nov 22, 2008

A T1 data line is a high speed, 1.54 megabits per second (Mbps), circuit which is comprised of 24 individual DS-O circuits. Each DS-O channel has a speed of 64 kilobits per second (Kbps). For perspective, your home telephone line is likely a DS-O line. T1 data lines are also at times referred to as DS1 circuits. T1 data is carried through two twisted pairs of copper wires. Virtually, all residences and businesses currently have two pairs of copper wires running to them. T1 lines are capable of delivering 1.54 Mbps simultaneously in both directions, one direction for each pair of copper lines. Because T1 data service is repeater driven (signal is digitally reestablished every 6000 feet), it is available several miles from telephone central offices. For this reason, T1 service can be available to virtually all of the businesses in the US. T1 lines are dedicated, in that they are always connected, and are also extremely stable. Most reputable providers include service level agreements which guarantee the reliability of the T1 lines they offer. Although the term T1 is commonly used when referring to a dedicated high bandwidth connection to the internet, T1 circuits can transfer data in many forms to accomplish a variety of functions. These include: fractional t1 (commonly 128 Kbps to 756 Kbps), burstable (less expensive for companies which normally do not need a full DS1/T1), integrated T1 (one T1 line comprised of any combination the types of DS1/T1 listed here), channelized DS1 (one form of integrated T1), point-to-point (direct and constant DS1 connection between to locations), dynamic integrated (a more state-of-the-art alternative to channelized integrated), local (local phone service), PRI, MPLS (multiprotocol label switching), and frame relay. Each of these types of DS1/T1 has advantages over the others, depending on the specific needs of your company. Also, the availability of each is based on the offerings of each T1 provider and the geographic location. As the authorized sales agent for the top 20 T1 providers in the country, we are able to provide real-time availability and comparative price quotes for any address in the country. To check availability and prices for your business, just complete the short form at the top of this page. It’s free, simple to use and there is no obligation. If you already have T1 related services, use this form to compare what you are currently paying. You may find that you are paying far too much for your existing service. (Click here to return to top of page)