NetComm NCT240 Installation Manual page 37

NetComm NCT240 Installation Guide Release 1.0
MPOE (Minimum or Main Point of Entry)
The location in a building where cables from the telephone service provider are terminated.
Network Diameter
Wire distance between two end stations in the same collision domain.
Private Branch Exchange (PBX)
A telephone exchange local to a particular organization who use, rather than provide,
telephone services.
POTS
Plain Old Telephone Service.
Redundant Power Unit (RPU)
A backup power supply that automatically takes over in case the primary power supply should
fail.
RJ-45 Connector
A connector for twisted-pair wiring.
Splitter
A filter to separate DSL signals from POTS signals to prevent mutual interference.
Switched Ports
Ports that are on separate collision domains or LAN segments.
Transmission Control Protocol/Internet Protocol (TCP/IP)
Protocol suite that includes TCP as the primary transport protocol, and IP as the network
layer protocol.
UTP
Unshielded twisted-pair cable.
ADSL
asymmetric data rate Digital Subscriber Line: A family of digital telecommunications
protocols designed to allow high speed data communication at data rates deliver data rates
up to 25 Mbps downstream and 1 Mbps upstream with corresponding maximum reach 18K feet
of 24 gauge twisted pair cable over the existing copper telephone lines between end-users
and telephone companies.
Virtual LAN (VLAN)
A Virtual LAN is a collection of network nodes that share the same collision domain regardless
of their physical location or connection point in the network. A VLAN serves as a logical
workgroup with no physical barriers, allowing users to share information and resources as
though located on the same LAN.
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