Tuesday, November 24, 2009
Difference of Switch and Routers
A router is a more sophisticated network device than either a switch or a hub. Like hubs and switches, network routers are typically small, box-like pieces of equipment that multiple computers can connect to. Each features a number of "ports" the front or back that provide the connection points for these computers, a connection for electric power, and a number of LED lights to display device status. While routers, hubs and switches all share similiar physical appearance, routers differ substantially in their inner workings.
A switch does essentially what a hub does but more efficiently. By paying attention to the traffic that comes across it, it can "learn" where particular addresses are. For example, if it sees traffic from machine A coming in on port 2, it now knows that machine A is connected to that port and that traffic to machine A needs to only be sent to that port and not any of the others. The net result of using a switch over a hub is that most of the network traffic only goes where it needs to rather than to every port. On busy networks this can make the network significantly faster.
Modular Jacks
Modular Jacks - a cornerstone of communications technology, have been used in the telecommunications and ethernet industry for many years. The main reasons for this are the simplicity and reliability of these products. Whether integrated in a simple telephone system, or in a gigabit application, “mod. jacks” represent the standard for network connections. Mod. jacks can be obtained in many different versions. Increasing data rates and space-saving requirements are driving increasing requests for these connectors with integrated filter components.
Information Outlets
Information outlets are 8-pin modular wall jacks. Most of the outlets are wired with push-on connections. Information outlets are also available that connect to a double modular plug-ended 4-pair station cable routed from the MDF, a site/satellite location, or an adapter.
A telecommunications wall outlet having a circuit assembly, i.e. a printed circuit or a resistor network within a housing. A modular jack and a connector are electrically connected together by the circuit assembly and are mounted upon it. Preferably, the housing wall and circuit assembly cooperate to hold the circuit assembly in position and the walls have provision for holding conductors in place as they are led from a wall into the outlet.
Patch panel
PATCH PANEL - Also known as a jackfield or patch bay, a patch panel is a panel that contains multiple cable connections. The back of the panel has wiring or other connective cabling that runs to disparate equipment. The front of the patch panel allows easy access to connect the different equipment through the use of short patch cables.
Tuesday, November 17, 2009
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