Netcomm IP DSLAM Manual Do Utilizador

A portion of the networking protocol that governs access to the transmission medium, 

facilitating the exchange of data between network nodes. 

MDF (Main Distribution Frame) 

Equipment where outside telephone lines are terminated at a building or site. 

An acronym for Management Information Base. It is a set of database objects that 

contains information about the device. 

MPOE (Minimum or Main Point of Entry) 

The location in a building where cables from the telephone service provider are 

terminated. 

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. 

Plain Old Telephone Service. 

Redundant Power Unit (RPU) 

A backup power supply that automatically takes over in case the primary power 

supply should fail. 

A connector for twisted-pair wiring. 

A filter to separate DSL signals from POTS signals to prevent mutual interference. 

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. 

Unshielded twisted-pair cable. 

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)