Media converters permit fiber usage when required and integrate new devices into existing cabling infrastructure. The answer to these issues is media converters. Network intricacy, challenging applications and the increasing range of network devices drive network bandwidth and speed requirements to new extents and push longer distance requirements inside the local area network (LAN). Media converters that include Layer 2 switching functionality offer rate-switching as well as other innovative features. They are presented as physical layer or Layer 2 switching systems. Generally, media converters are protocol specific and they support an extensive array of data rates and network types. In addition, media converters have the capability to convert between wavelengths for applications that use wavelength division multiplexing (WDM). It also converts a dual fiber link to single fiber with the help of bi-directional (BIDI) data flow. Category 1 − UTP used in telephone lines with data rate Shielded Twisted Pair ( STP ): They have a braided wired mesh that encases each pair of insulated wires.ĮIA has classified twisted pair cables into seven categories −.Unshielded Twisted Pair ( UTP ): These generally comprise of wires and insulators.There are two types of twisted pair cables − Thus a much better immunity against noise is obtained. The receiver calculates the difference in the voltages of the two wires for retrieving data.
Thus the external waves cancel out due to the different twists. When the wires are twisted, some part of the noise signals is in the direction of data signals while the other parts are in the opposite directions. One of the wires is used to transmit data and the other is the ground reference.Īll transmissions are prone to noise, interferences, and crosstalks. The copper wires are typically 1mm in diameter. A twisted pair cable comprises of two separate insulated copper wires, which are twisted together and run in parallel. One of the earliest guided transmission media is twisted pair cables.
0 kommentar(er)
