A base use of fiber in telecommunications is within facility networks. A facility network is the connectivity capabilities within an office or group. Information that is hosted on the facility network's servers can be accessed by any computer that is associated to the network, and thus shared with any computer that is granted access.
Any high quality fiber optic connectivity can even allow one to access another hard drive on the network by controlling a networks user's computer completely. Even intra-building systems such as a school district's network facility can have a computer technician fix a software associated issue from his office rather than physically going to the classroom and sitting at the computer itself. This becomes especially helpful when installing new software onto computer's hard drives for an entire office.
While fiber patch cables are not directly associated to each computer in a network, they are responsible for connecting the different servers so that the network drives can be accessed similar to the internet through Catv Ethernet cables. For example, the Lan network of an office building receives their internet from a router which most likely is associated to a fiber optic patch panel in case,granted by an Isp.
The fiber optic cables that run over the network also go into that patch panel and finally back to the servers at which the network is based off of.
Many businesses' facility networks still run off of copper based systems. However, larger businesses with more servers have too much data to be reasonably transferred over a copper network. For this reason, fiber optic connectivity is more accepted for running longer distances with more bandwidth.
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