
network elements. The words “port” and “line” may often be used synonymously. “Port”
emphasizes the physical interface, and “line” emphasizes the interconnection. Either may be
used to identify the signal being carried.
PWB
Printed Wiring Board
PWR
Power
PWR ON
Power On
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Q
Q-LAN
Thin Ethernet LAN which connects the manager to Gateway Network Elements so that
management information between Network Elements and management systems can be
exchanged.
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R
RAM
Random Access Memory
Remote Network Element
Any Network Element that is connected to the referenced Network Element through either an
electrical or optical link. It may be the adjacent node on a ring, or N nodes away from the
reference. It also may be at the same physical location but is usually at another (remote) site.
Ring
A configuration of nodes comprised of network elements connected in a circular fashion. Under
normal conditions, each node is interconnected with its neighbor and includes capacity for
transmission in either direction between adjacent nodes. Path switched rings use a head-end
bridge and tail-end switch. Line switched rings actively reroute traffic over the protection
capacity.
Route
A series of contiguous digital sections.
Router
An interface between two networks. While routers are like bridges, they work differently.
Routers provide more functionality than bridges. For example, they can find the best route
between any two networks, even if there are several different networks in between. Routers also
provide network management capabilities such as load balancing, partitioning of the network,
and trouble-shooting.
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365-374-074
Issue a, April 2002
Lucent Technologies
G L O S S A R Y
G L - 9