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	What is Unshielded Twisted Pair? - a definition from Whatis.com - see also: UTP
		Unshielded twisted pair is the most common kind of copper telephone wiring.
		Twisted pair is now frequently installed with two pairs to the home, with the extra pair making it possible for you to add another line (perhaps for modem use) when you need it.
		Although twisted pair is often associated with home use, a higher grade of twisted pair is often used for horizontal wiring in LAN installations because it is less expensive than coaxial cable.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci214167,00.html (486 words)

	Unshielded twisted pair - Wikipedia, the free encyclopedia
		Unshielded twisted pair (UTP) cabling is the most common cable used in computer networking.
		It is a variant of twisted pair cabling.UTP cables are often called "ethernet cables" after Ethernet, the most common data networking standard that utilizes UTP cables, although not the most reliable.
		It is the primary wire type for telephone usage and is very common for computer networking, especially in patch cables or temporary network connections due to the high flexibility of the cables.
	en.wikipedia.org /wiki/Unshielded_twisted_pair (154 words)

	Twisted pair - Wikipedia, the free encyclopedia
		Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of canceling out electromagnetic interference which can cause crosstalk.
		Shielded Twisted Pair is rarely used because the potential performance increase over UTP is not worth the much greater cost of STP.
		Twisted pair cabling is standardized into various categories by number, which indicate signal integrity attributes.
	en.wikipedia.org /wiki/Twisted_pair (389 words)

	Communication filter for unshielded, twisted-pair cable - Patent 5095291
		Unshielded, twisted-pair cable of the type conventionally used for modular telephone lines is finding increased use for digital applications and particularly for local area network (LAN) systems.
		Owing to the manner in which the two transformers are wound, a data signal, which is applied differentially to the twisted pair will not be impeded by the in-line transformer, but will be impeded by the shunt transformer.
		This requires two twisted pairs, of which the upper pair is utilized for purposes of receiving, and the lower pair is utilized for purposes of transmitting.
	www.freepatentsonline.com /5095291.html (1276 words)

	Chapter 4: Cabling (Site not responding. Last check: )
		Unshielded twisted pair (UTP) is the most popular and is generally the best option for school networks (See fig.
		Each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other electrical devices.
		A disadvantage of UTP is that it may be susceptible to radio and electrical frequency interference.
	fcit.coedu.usf.edu /NETWORK/chap4/chap4.htm (1303 words)

	UTP - Unshielded Twisted Pair
		Unshielded twisted pair; cabling with wires that are twisted around each other; the individual wires are uninsulated
		Unshielded Twisted Pair Type of network cables with several parallel wires used for Ethernet.
		Unshielded wire is preferred for transporting high speed data because at higher speeds, radiation is created.
	www.auditmypc.com /acronym/UTP.asp (419 words)

	Twisted Pair Cable
		Twisted-Pair Ethernet (Unshielded twisted pair)—10BASE-T, 10BASE-T is the standard and UTP is its predecessor.
		Cable used is 22 to 26 AWB unshielded twisted pair (standard telephone wire) at last Category 2 with two twists per foot.
		Unshielded twisted-pair also gained in popularity for Token Ring networks, which were traditionally wired with shielded twisted-pair.
	www3.baylor.edu /~Sharon_P_Johnson/etg/cabletwisted.htm (556 words)

	UNSHIELDED TWISTED PAIR TRANSMISSION MEDIA (Site not responding. Last check: )
		UTP is the copper media, inherited from telephony, which is being used for increasingly higher data rates, and is rapidly becoming the de facto standard for horizontal wiring.
		A Twisted Pair is a pair of copper wires, with diameters of 0.4-0.8 mm, twisted together and wrapped with a plastic coating.
		UTP is a very flexible, low cost media, and can be used for either voice or data communications.
	www2.rad.com /networks/1994/transmis/utp.htm (205 words)

	Network Computing \| Buyer's Guide \| Network Systems & Infrastructure \| UTP Cabling Options \| Page 1 \| October 15, 2001
		Four-pair UTP has been the medium of choice for large and small networks for many years, and the cable manufacturing community has been exceptional in its role as a catalyst for higher speeds and increased bandwidth in networks.
		UTP that far surpasses current requirements for Gigabit Ethernet is usually sold as the cabling that will future-proof your network, but you must guess whether your future enterprise profile will require (or would ever have a prayer of using) such awesome bandwidth capacity.
		Plenum-rated UTP wiring is intended for use where wire is installed freely (not in conduit) in return-air spaces (open spaces in ceilings and under computer floors that are part of the HVAC system in a facility).
	www.networkcomputing.com /1221/1221buyers2.html (1184 words)

	Chapter 4: Cabling
		Unshielded twisted pair (UTP) is the most popular and is generally the best option for school networks (See fig.
		Each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other electrical devices.
		A disadvantage of UTP is that it may be susceptible to radio and electrical frequency interference.
	fcit.usf.edu /network/chap4/chap4.htm (1303 words)

	[No title]
		UTP cable is used not only for networking but also for the traditional telephone (UTP-Cat 1).
		UTP-CAT5 is the most popular UTP cable, it came to replace the good old coaxial cable which was not able to keep up with the constant growing need for faster and more reliable networks.
		The "twist" effect of each pair in the cables will cause any interference presented/picked up on one cable to be cancelled out by the cable's partner which twists around the initial cable.
	www.firewall.cx /cabling_utp.php (391 words)

	Telephone Wiring Overview (Site not responding. Last check: )
		Twisted pair copper wire is most prevalent in telecommunication media today.
		Each pair is twisted to prevent induction and crosstalk from other pairs in the same bundle and from outside power circuits and motors.
		Unshielded twisted pair cable generally falls into the following applications in accordance with Article 800 of the National Electrical Code, and is so noted on the cable product.
	www.therealcableguys.com /docs/telephone_wiring_overview1.htm (2433 words)

	Td Communications :: Twisted Pair
		Unshielded Twisted Pair (UTP) has been designed for use in voice applications and local area networks.
		In an unshielded cable, careful design of the cable and the associated electronic equipment results in a "balance" of the currents in the two conductors of a pair.
		Generally, the more twists per foot of cable, the better the cable is electrically balanced.
	tdcommunications.com /twisted.html (261 words)

	Unshielded Twisted-Pair (UTP) Cable
		However, the characteristics of UTP are similar in many ways to STP, differing primarily in attenuation and EMI.
		Network engineers can sometimes use existing UTP telephone cabling (if it is new enough and of a high enough quality to support network communications) for network cabling.
		UTP cable is a latecomer to high-performance LANs because engineers only recently solved the problems of managing radiated noise and susceptibility to EMI.
	www.measureup.com /testobjects/MS_NetEss/5a6b288.htm (394 words)

	Twisted pair cables ...
		This kind of unshielded twisted pair wiring method is used in many CCTV applications nowadays to use existing in-house twisted pair wiring instead of installing new coaxial cable for the CCTV camera.
		Unshielded twisted pair or UTP cable is a very inexpensive interconnection when compared to a coaxial cable connection.
		Unshielded twisted pair is suitable cable to carry balanced signals (balanced audio, 10/100Base-T Ethernet, telephone, etc.), but is far from optimal for unbalanced signals (like home hifi audio interfaces with RCA connductors).
	www.epanorama.net /documents/wiring/twistedpair.html (12423 words)

	Wiring Tutorial for 10BaseT Unshielded Twisted Pair (UTP) (Site not responding. Last check: )
		Whether the exterior portion of the cable that contains the 4 twisted pairs, the jacket, is Plenum grade or Non-plenum grade is very important, it refers to the Fire Codes, but is outside the scope of this tutorial.
		The pairs of wires in UTP cable are colored so that you can identify the same wire at each end.
		The IEEE Specification for Ethernet 10BaseT requires that two twisted pairs be used and that one pair is connected to pins 1 and 2, and that the second pair is connected to pins 3 and 6.
	www.netspec.com /helpdesk/wiredoc.html (895 words)

	Extron Electronics Twisted Pair
		Twisted pair products are the electronic signal conversion devices that are used to adapt common A/V signal types, including composite video, S-video, component video, RGBHV, audio, and RS-232 control, for distribution over standard Category-type twisted pair cabling.
		Almost any signal type may be adapted to use twisted pair cables by selecting the appropriate Extron twisted pair transmitter and receiver combination.
		Please be aware that twisted pair products are not compatible with Ethernet/LAN applications; A/V signals in twisted pair applications may not be transmitted over the same physical cabling used for computer data signals.
	www.extron.com /product/prodtype08.asp (421 words)

	OfficeConnect Fast Ethernet Network Interface Card User Guide
		Two wires are twisted together (the twisting prevents interference problems) to form a pair, and the pair forms a circuit that can transmit data.
		A cable is a bundle of one or more twisted pairs surrounded by an insulator.
		Unshielded twisted pair (UTP) is the most commonly used type of twisted-pair cable.
	support.3com.com /infodeli/tools/nic/3csoho100-tx/docs/ug/apxa.htm (490 words)

	Twisted Pair
		Dependend on the tightness of the twists and the amount of twistes the difference could be up to 20% of the actual copper length.
		Twisted pair cable is mostly used in environments where the signals are balanced.
		Due to the fact that one twisted pair is used for the A and B lead an induced signal will not cause much trouble.
	ckp.made-it.com /twistedpair.html (344 words)

	Data Communications Cabling FAQ - 22.0 Testing Unshielded Twisted Pair Cables
		Crossed pair: A pair is connected to different pins at each end (example: pair 1 is connected to pins 4&5 at one end, and pins 1&2 at the other).
		Reversed pair: The two lines in a pair are connected to opposite pins at each end of the cable (example: the line on pin 1 is connected to pin 2 at the other end, the line on pin 2 is connected to line 1).
		Split pair: One line from each of two pairs is connected as if it were a pair (example: the Blue and White-Orange lines are connected to pins 4&5, White-Blue and Orange to pins 3&6).
	www.delmar.edu /Courses/ITNW2313.org/cabling-faq/faq-doc-22.html (742 words)

	EIA/TIA-568 and TSB-36
		Note 2: Four-pair, shielded twisted pair cables which meet the transmission requirements of this section may also be used.
		The pair twist lengths shall be selected by the manufacturer to assure compliance with the crosstalk requirements of this standard.
		Because the university continues to demonstrate the need for higher speeds over twisted pair, and manufacturer research continues in the implementation of 100 Megabit speeds over copper (CDDI) in both unshielded and shielded cables, the use of Type-2 combination cable is continued.
	www.commserv.ucsb.edu /infrastructure/standards/history/EIA-TIA_568.asp (1427 words)

	The Cabling Connection
		Twisted Pair cable consists of two independently insulated wires twisted around one another.
		CAT5 is the 5th generation of twisted pair Ethernet cabling and the most popular of all twisted pair cables in use today.
		It is different from UTP in that the twisted pairs are in a shield with electrically grounded woven copper mesh separating them from the cable’s outer sheath.
	www.jidaw.com /cabling.html (871 words)

	UTP cables, unshielded twisted pair
		Unshielded Twisted Pair UTP cables are designed to be cost-effective, flexible cabling for most general applications.
		UTP cables contain four twisted-pairs, enclosed in a common sheath.
		Unshielded twisted pair, supporting transmission up to 100MHz - this is the most common form of UTP cabling, but should be tested for 100Base-T performance.
	www.network-cables-guide.co.uk /utp-cables.htm (293 words)

	Wiring Tutorial for 10BaseT Unshielded Twisted Pair (UTP)
		Typically the solid is used to run through walls and ceilings and the flex is used to make drop cables (the cable from the wall plate to the desktop computer) and patch cables (the cable from the patch panel to the hub).
		Whether the exterior portion of the cable that contains the 4 twisted pairs, the jacket, is Plenum grade or Non-plenum grade is very important, it refers to the Fire Codes, but is outside the scope of this tutorial.
		The pairs of wires in UTP cable are colored so that you can identify the same wire at each end.
	agents.csie.ntu.edu.tw /~jih/Internet/RJ45.html (804 words)

	Network Connectivity - 100 Mbps Cabling Specifications (Site not responding. Last check: )
		Three pairs are used to transmit data, while the fourth pair is used to detect collisions.
		The receive data pair (the two wires designated RD) must be a twisted pair, and the transmit data pair (designated TD) must be a twisted pair.
		The first bi-directional pair (designated BI_D3) must be a twisted pair and the second bi-directional pair (designated BI_D4) must be a twisted pair.
	developer.intel.com /support/network/sb/CS-008464.htm (1124 words)

	INTRO2U.com :: Testing Unshielded Twisted Pair Introduction
		The jack's internal wiring connects each pair to the correct pins, according to the assignment scheme for which the jack is designed: EIA-568A, 568B, USOC or whatever.
		A pair is connected to different pins at each end (example: pair 1 is connected to pins 4and5 at one end, and pins 1and2 at the other).
		The two lines in a pair are connected to opposite pins at each end of the cable (example: the line on pin 1 is connected to pin 2 at the other end, the line on pin 2 is connected to line 1).
	www.intro2u.net /reference/unshielded_twisted_pair.htm (691 words)

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