Xtramus XG2 V1.3 - Manual (Page 19)

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2.3.3. Application for Home User
A schematic illustrating how the FTTX architectures vary with regard to the distance between the optical fiber and
the end-user. Fiber to the x (FTTX) is a generic term for any network architecture that uses optical fiber to replace
all or part of the usual copper local loop used for telecommunications. The four technologies, in order of an
increasingly longer fiber loop are:
¾ Fiber to the node / neighborhood (FTTN)
¾ Fiber to the curb (FTTC) / Fiber to the kerb (FTTK)
¾ Fiber to the building (FTTB)
¾ Fiber to the home (FTTH)
E
A B C D
F
The building on the left is the central office; the building on the right is one of the buildings served by the central
office. The white or gray blocks represent separate rooms or office spaces within the same building.
A : Central Office of ISP
B : Network connection via optical fiber
C : Installation of XG2 for media conversion
D : Network connection via copper wire. It can be Cat. 6a cable (under 300 meters) or telephone line via xDSL
(Technologies such as VDSL provide high speed, short-range link are used often in FTTx service)
E : Different rooms of home or different compartments in the same building.
F : XG2 can be located at any place that near or away from building, depending on the service to home users.
Advantage for ISP
For the time before, if the client has requirement of lots bandwidth, ISP has to cabling several fibers with gigabit
connection to the same location and distributes the connection by Gigabit switch or media converter to copper
wired destination.
Depends on the bandwidth required for client, ISP can configure a XG2 media converter between the connection of
light blue and dark blue line in the graph. With 10G Ethernet conversion between fiber and copper wire, ISP can
provide heavyweight bandwidth service that is closer to the client without spending too much cost.
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