Wired Lines

In: Computers and Technology

Submitted By jeanyesjedeye
Words 1044
Pages 5
Wired Media Wired transmission lines are physical systems that are used to transmit certain physical quantities. They consist of a collection of a set of conductors made up of good conductors of electricity, like copper and aluminum, and a wire. Some transmission lines used are t-1, t-3, OC lines, DSL, dial-up, and cable lines.
A T-1 line is a copper or fiber optic telephone line that can carry more data than traditional dial-up lines. These lines were originally made with twisted copper. T-1 lines are still being made, but the standard is slowly being upgraded to fiber optic lines. T-1 lines can transmit 1.544 Mbps. They connect geographically separate offices through a private voice and/or data connection. It is very useful for small businesses and commercial buildings with more than 8 lines. Getting a T-1 line is costly (around $1,500 a month), however it could save money for companies who have many phone lines.
T-3 lines are a collection of about 28 T-1 lines that can transmit data at 44.736 Mbps. Obviously they are faster than T-1 lines, because they have a collection of 28 T-1 lines. They are used for longer distances than T-1 as well. Similar to T-1 lines, they are used to connect geographically separate offices through a private voice and/or data connection. They cost upwards of $3,000 a month to operate so not all small businesses can afford to have a T-3 line.
Optical Carrier lines (OC lines), are a part of the Synchronous Optical Network (SONET). OC-1 is the base rate of Optical Carrier lines. This rate is 51.84 Mbps. These speeds go up to 40 Gbps with OC-768 levels. The integer behind the OC is the multiple of OC-1 rates (51.8 x n for OC-n).
OC 768 consists of a SONET ring to maintain its reliability during high-speed transmissions. It is so much more efficient than a single T-1 line. In fact, It is capable of transmitting 516,096 voice…...

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