T3 Definition

T3 Definition | What is T3?

T-3 T-Carrier.
“A T-3 is comprised of 28 T-1’s. That’s 672 POTS/DS0 lines, or a data speed of 44.73 Mb/s. T-3’s are quite expensive, but provide data speeds more than adequate for handling a wide variety of video, data and voice applications.” Glossary definitions. (Jason Hamilton, “The Telephone Company: Giving more than just a 'voice' to customers,” Geek Shui Living – Tech News and Blogs for the Computing Masses, May 14, 2010)

T3 leased line connection.
“A T3 is a leased line connection that can transfer almost 45 megabytes of data per second...”  T3 connection definition.(Nicole Nascenzi, “Companies Have Choice of A Variety of Web-Hosting Options,” Tulsa World, Knight Ridder/Tribune Business News, May 12, 2001)  What does it cost to lease a T3 line?

T3 = 28 T1 Lines.
“A single T3 circuit, which offers the bandwidth equivalent of 28 T1s, can often be cost-justified when compared with five to 10 T1 circuits.”  (John Griffin and Mike Lefkowitz, “Understanding T3 signal formats. (T3 communications),” Business Communications Review, April 1, 1991)

T-3 dedicated digital communication link
"Also known as DS3 and T3, a T-3 is a dedicated digital communication link provided by a telephone company that offers 44.75 megabits per second of bandwidth, commonly used for carrying traffic to and from private business networks and Internet service providers.”  (Dr. August E. Grant and Jennifer H. Meadows, “Defintion of Telecom and Broadband Terms,” cited from "Communication Technology Update (Ninth Edition),” College of Mass Communications and Information Studies, University of South Carolina Columbia, SC 29208, 2004)

T3 connection. 
"A T3 connection at 44.736 Mbps is quicker than a T1 connection at only 1.544 Mbps fiber optic line.  Smaller businesses normally lease T1 or T3 lines which are adequate at serving 5-100 employees at one or more locations. However, T1 and T3 lines do not have the bandwidth to serve larger businesses. Many are finding this out the hard way and upgrading to higher bandwidth connections. “An OC3 connection makes it possible for larger businesses to expand their digital network beyond a set geographic area. OC3 Connection versus Other Connection OC3 connections have a feature called point to point access. This means that there are multiple wireless access points that can exchange data. Up to 255 people can send audio, video, voice, and multimedia files from access point to access point. This is a viable solution for businesses that have found their T1 and T3 connections clogged with data which slows down or even crashes databases.”  OC3 faster network than T3. (Van Theodorou, “Getting Connected - the OC3 Connection,” Buzzle, April 24, 2008)

T3 dedicated connection.
“A dedicated digital connection that can transmit voice and data simultaneously at. . . . transmission rates up to 45 Mbps. T1 and T3 use four wires and provide full-duplex capability (allowing data to be sent and received at the same time). The four wires were originally a pair of twisted-pair copper wires but the technology now can accommodate coaxial cable, optical fiber, digital microwave and other media.” (Diane Kittower, “Fatter, Faster, Cheaper Wires,” Governing Magazine, August 1, 2000)

T3 line. 
“A T3 line has 28 T1s or 672 channels and supports a data rate of 44.736 Mbps.  Many large service providers offer both T3 and fractional T3 leased lines with transmission rates of 6 Mbps and up.  A single T3 commonly replaces several T1 lines.”  (Ken Cuddeback, Associate Professor, TBE 2300 “Introduction to Networking,” Course Lecture PowerPoint Presentation on Greg Tomsho, “Guide to Networking Essentials,” Fifth Edition, Chapter 13, Enterprise and Wide Area Networks, 2006, Weber State University, Telecommunications and Business Education, Ogden, Utah, 801-626-6026, Fall 2009)

T3 and T1 bandwidth telephone connections.  "Higher bandwidth options. Large firms with high traffic connect to an ISP using higher bandwidth telephone connections.  T1: Operates at 1.544 Mbps.  T3: Operates at 44.7 Mbps.  These connections are more expensive than the previous options.  Network access providers use T1 and T3 lines as
well as Asynchronous Transfer Mode (ATM) connections with bandwidths up to 622 Gbps.  When making decisions about Internet connections you must consider:  Bandwidth needed.  Cost of startup. Monthly fees. Traffic issues."  (Professor Amber Settle, “ECT 250: Survey of e-commerce technology - Networking,” ECT 250 Lecture Notes in PowerPoint 2000 format,  College of Computing and Digital Media, DePaul University, Chicago, Illinois, May 30, 2001, Slides 16 and 17)

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