UTP-Unshielded Twisted Pair. Normally UTP contains 8 wires or 4 pair. 100 meter maximum length. 4-100 Mbps speed.
STP-Shielded twisted pair. 100 meter maximum length. 16-155 Mbps speed. Lower electrical interference than UTP
UTP is a general class of cable that encompasses most variations of Cat3, Cat5 and Cat6 cables.
It indicated that the cable is composed of multiple pairs of conductors and that those conductors are twisted in pairs inside the jacket.
Shielded twisted-pair cable encases the signal-carrying wires in a conducting shield to reduce electromagnetic interference. Unshielded twisted-pair cable does not rely on physical shielding to block interference, but rather on media filters.
It offer more more resistant to EMI/RFI as compare to UTP as extra shielding is included in STP. Its price is also a little high as compare to UTP but both use the same connector RJ-45.
Thanks
Asif
An unshielded twisted pair is a pair of conductors (each with individual insulation) that are twisted together inside a jacket, or outer covering. The phone lines are just a single pair of separately insulated wires twisted together inside an outer covering. They were acceptable for what they did at the time, and we're still stuck with them today. A coaxial cable is a 2-conductor cable composed of a center conductor, an insulator that completely covers it, and an outer conductor that completely covers the insulator. A final layer of insulation or a "jacket" covers all of this. Those are the physical differences. The electrical differences generally center on the fact that coaxial cable ("coax") is the better choice to carry data or higher frequency electrical signals. The transmission of radio frequency (RF) electromagnetic signals in unshielded twisted pairs would result in a huge amount of loss of signal, and the pair would also radiate the signal to some extent. Note the a twisted pair is twisted to reduce both radiation and loss, and it can be used effectively in short runs to carry data. But any re-radiation might interfere with other equipment, and signal leakage is something we don't want a lot of. Coax, when it is in good condition and terminated properly, provides a good RF pathway and good shielding (minimum leakage) with regard to the environment. Twisted pair phone lines are still the norm in the U.S. (and lots of other places) because they're already in place. It would cost a mint to replace them all, but we're seeing cable companies offering phone service, and some phone companies offering cable service. In all these cases, we see services (cable, phone and internet connection) "bundled" into a package, and by doing this, companies are making an attempt to get away from the twisted pair and onto a coax. If you've ever used dial-up or even DSL internet connections, you've used the twisted pair for service. And there are limits to what can be done. But if you compare them to the high speed services offered by companies who give us a coax connection, you'll notice the increase in speed with which the data can be transferred. You'll load pages in the blink of an eye, and download large files and stream video with little effort. Many words say little a twisted pair can only equalize their own magnetic interference. Since the twist can be from many turns to few the impedance cannot be ascertain as a steady value. Coax cable do provide external magnetic insulation by the shield since the cable is evenly constructed a certain inpedance can be counted on at a paricular frequency and lenght. However like all cables at some frequency and lenght the inpedance can be virtual zero
Using AT&T Standard, Straight Cable & Cross Cable have different pin specifications for Pinouts at the both ends on the cable. Straight Cable connects wires at pin number 12345678 at one end to pins 12345678 at other end. Cross Cable connects wires at pins 12345678 at one end and changes wires pinouts to 36178245 at other end.
Unshielded Twisted Pair (UTP)
Shielded twisted will pick up much less noise and interference from electromagnetic radiation than an unshielded cable.
improves performance
maintains strong signals over longer distances
it reduces electromagnetic interference and emissions
No
It improves performance It maintains strong signals over longer distances It reduces electromagnetic interference and emissions
Ethernet cable being shielded or unshielded twisted pair or CAT 5.
The twisting in a twisted pair cable helps make the cable immune to electromagnetic interference. These cables are of two types: Shielded and unshielded twisted pair.
The first variety is UTP or unshielded twisted pair, often used in LAN's with maximum cable length of 100m. The second one is STP or shielded twisted pair, extensively used for telephones.
Two conductors, twisted together, without creating a short.
cable
Twisted pair wire is placed inside a thin metallic shielding, similar to aluminum foil, and is then enclosed in an outer plastic casing. The shielding provides further electrical isolation of the signal-carrying pair of wires. Shielded twisted pair wires are less susceptible to electrical interference caused by nearby equipment or wires and, in turn, are less likely to cause interference themselves. Because it is electrically "cleaner," shielded twisted pair wire can carry data at a faster speed than unshielded twisted pair wire can. The disadvantage of shielded twisted pair wire is that it is physically larger and more expensive than twisted pair wire, and it is more difficult to connect to a terminating block.
Unshielded Twisted Pair
UTP- Unshielded twisted pair
Coaxial cables are shielded; thus preventing them from other interference. UTP cable means Unshielded Twisted Pair - thus it has no protection against incoming interference.
* UTP for Unshielded Twisted Pair * STP for Shielded Twisted Pair * FTP for Foiled Twisted Pair * S/UTP for Screened Unshielded Twisted Pair * S/STP for Screened Shielded Twisted Pair * S/FTP for Shielded Foiled Twisted Pair* UTP cable has no shielding, only an insulation around the cables * STP cable has a metal shield around each twisted pair, all pairs together are in the cable covered by insulation * FTP cable has a metal shield around all pairs - "the cable"- together * S/UTP cable has a metal shield around all pairs - "the cable"- together(or would be the same as FTP) * S/STP cable has a metal shield around each twisted pair, and a metal shieldaround all pairs - "the cable"- together(or would be the same as S/FTP) * S/FTP cable has a metal shield around each twisted pair, and a metal shield around all pairs - "the cable"- together(or would be the same as S/STP) * UTP is unshielded, that's simple. * FTP and STP are ofted intermixed, sometimes S/UTP is also thrown in. In general it means the cable is shielded in one place. * S/FTP ans S/STP are of course often intermixed, both should get you a double shielded cable. * Unshielded twisted pair cable will do just fine if there are not too much electromagnic interferences (EMI), that's what the twisting is for. * Shielded cable will protect your signal better from interference. Though there are no guarantees of course, if the interference source is too strong it'll still influence things.Things like big electro motors (an elevator engine), powerfull speaker systems (festival rig), strong light installations (that same festival rig) or a nearby high-power cable are some examples of interference sources. * Evidently unshielded cable is typically more flexible then shielded cable. * I have no idea what the practical difference between FTP and STP cable would be, but it might have something to do with the flexibility rather then with the shielding effectiveness. (): Shield[]: InsulationO: Conductor[O][O]: One twisted pair of cables UTP[ [O][O] [O][O] .... [O][O] ] FTP[ ( [O][O] [O][O] .... [O][O] ) ] STP[ ([O][O]) ([O][O]) .... ([O][O]) ] S/FTP[ ( ([O][O]) ([O][O]) .... ([O][O]) ) ]