Installation Manual

Table Of Contents
Product Glossary - R0.1 glossary-5
CONFIDENTIAL & PROPRIETARY
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Invisible Fiber Product
Glossary
10BaseFL
Part of the IEEE 802.1j standard for 10 Mbps Ethernet fiber.
10BaseT
IEEE 802.3 standard specifying Ethernet over unshielded twisted pair cables.
99.999% availability
(Also known as five 9s availability.) Amount of time the system is expected to
be available. If the system is available 99.999% of the time, expected down
time is approximately six minutes per year, derived as follows:
Days per year X hours per day X (10099.999) ÷ 100 X 60 =
365.25 X 24 X (10099.999) ÷ 100 X 60 = 5.2 minutes
100BaseFX
Part of the IEEE 802.3u standard for 100 Mbps Ethernet over fiber.
A
Add/Drop Multiplexer (ADM)
A device that provides an interface between the different signals in a digital
T-carrier or SONET network. When an ADM is inserted in a transmission
line, it enables lower rate signals to be extracted (dropped) and transported
differently (electrical or optical). Similarly, a lower rate signal can be inserted
(added) into a higher rate signal.
ADD/DROP
MULTIPLEXER
Signals added and dropped
at an intermediate point in
the transmission (via a
multiplexer)
Communication Flow