Cabletron Systems CSX100 series User Manual - page 140

ISDN Router

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MAC layer/address

Media Access Control layer/address defined by the IEEE 802.3 specification

which defines media access including framing and error detection.  Part of

the OSI reference model data link layer.

Metric

An algorithm used by routers to determine the best path for transmitting

packets to a remote destination based on considerations such as time, delay,

cost, etc.

MODEM

Modulator/Demodulator.  A device that converts digital signals to/from

analog signals for transmission over analog communications lines.

Multi-Link Protocol

A protocol, defined in RFC 1717, defines a way to perform inverse

multiplexing on the TCP/IP Point-to-Point Protocol (PPP); i.e., the ability to

use multiple serial WAN channels for transferring one datastream.  With

MLP, a user can send and receive data over both B-channels in an ISDN

basic-rate interface connection.

NetWare

A network operating system developed by Novell, Inc. providing shared

access to files and other network services. IPX is the main protocol.

Network Layer

Layer 3 of the OSI reference model, which provides the protocol routing

function.

Node

Refers to a termination point for communication links; entity that can access

a network.

NT1

Network Terminator 1. Termination of the ISDN line at the end user’s side of

the connection.

OSI

Open System Interconnection.  An international standard developed by ITU

(formally CCITT) and ISO (International Standards Organization) to

facilitate data networking multi-vendor interoperability.  The OSI Reference

Model defines seven layers, each providing specific network functions.