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2. Twisted pair - Wikipedia

   en.wikipedia.org/wiki/Twisted_pair

   Twisted pair cabling is a type of communications cable in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility. Compared to a single conductor or an untwisted balanced pair , a twisted pair reduces electromagnetic radiation from the pair and crosstalk between neighbouring ...

3. RS-422 - Wikipedia

   en.wikipedia.org/wiki/RS-422

   When used in relation to communications wiring, RS-422 wiring refers to cable made of 2 sets of twisted pair, often with each pair being shielded, and a ground wire. While a double-pair cable may be practical for many RS-422 applications, the RS-422 specification only defines one signal path and does not assign any function to it.

4. Star network - Wikipedia

   en.wikipedia.org/wiki/Star_network

   The star configuration is commonly used with twisted pair cable and optical fiber cable. However, it can also be used with coaxial cable as in, for example, a video router . Advantages and disadvantages

5. Transposition (transmission lines) - Wikipedia

   en.wikipedia.org/wiki/Transposition...

   For cables, the swapping is gradual and continuous; that is the two or three conductors are twisted around each other. For communication cables, this is called twisted pair. For overhead power lines or open pair communication lines, the conductors are exchanged at pylons, for example at transposition towers or at utility poles, respectively.

6. Network topology - Wikipedia

   en.wikipedia.org/wiki/Network_topology

   Twisted pair cabling comes in two forms: unshielded twisted pair (UTP) and shielded twisted pair (STP). Each form comes in several category ratings, designed for use in various scenarios. 2007 map showing submarine optical fiber telecommunication cables around the world. An optical fiber is a glass fiber. It carries pulses of light that ...

7. Category 2 cable - Wikipedia

   en.wikipedia.org/wiki/Category_2_cable

   Category 2 cable. Category 2 cable, also known as Cat 2, is a grade of unshielded twisted pair cabling designed for telephone and data communications. The maximum frequency suitable for transmission over Cat 2 cable is 4 MHz, and the maximum bandwidth is 4 Mbit/s. [ 1][ 2] Cat 2 cable contains 4 pairs of wires, or 8 wires total. [ 3]