ts together. It is not widely used. fiber-optic cable A type of cable that is made from glass strands rather than copper wire. The key advantage of fiber-optic cabling is that it is non-electric. Thus, it is immune from electrical interference and interference from other cables within the same conduit. Fiber-optic cabling can be used for higher-speed transmissions than twisted-pair copper cabling. Fibre Channel protocol Used in storage area networks and data centers for gigabit-speed, highly reliable, short-distance access to devices such as disks, graphics equipment, video input/output devices, and storage devices that hold massive amounts of data. firewall Software and hardware that prevents unauthorized access to an organization's network files. The intention is to protect files from computer viruses and electronic snooping. firmware Special software embedded in hardware (routers, printers, cellular phones etc.) containing instructions that control the hardware on which it's installed. Firmware is non-volatile. It isn't lost when power is lost. fixed mobile convergence The capability to use the same handset or portable computer for Wi-Fi as well as mobile voice and data sessions. For voice calls, it is the capability to continue the call when moving; for example, from a hotspot or home to a cellular network, and vice versa. fixed wireless www.TechnicalPDF.com Wireless service between fixed points. Generally, these are between an antenna on a tower and a dish on a business or residential customer's building. It is also used to connect two buildings together as a lower-cost option than running cabling. Used most often in rural or hard-to-cable areas. fixed wireless access Provides similar data rates as Gigabit Ethernet technologies using wireless media rather than cabling. LTE and 5G can be used for broadband wireless access service. fractional T3 A less expensive T3 access scheme in which the customer pays for a fraction of the 672-channel capacity of T3 lines. For example, it might have the capacity of 6 Tis o