Prestige 1600 Universal Access Concentrator

 

 

 

 

 

 

RADIUS Accounting

 

This facility logs information about dial-in connections. It can be used independently of RADIUS

 

 

 

 

Authentication. It allows data to be sent at the start and the end of sessions, indicating the

 

 

 

 

amount of resources (time, packets, bytes, etc.) used during the session. An ISP could use this

 

 

 

 

function for special security and billing needs.

 

 

 

 

 

 

RADIUS

 

An external RADIUS server can provide authentication service for an unlimited number of DSL

 

 

Authentication

 

users.

 

 

 

 

 

 

RFC

 

An RFC (Request for Comments) is an Internet formal document or standard that is the result of

 

 

 

 

committee drafting and subsequent review by interested parties. Some RFCs are informational

 

 

 

 

in nature. Of those that are intended to become Internet standards, the final version of the RFC

 

 

 

 

becomes the standard and no further comments or changes are permitted. Change can occur,

 

 

 

 

however, through subsequent RFCs.

 

 

 

 

 

 

RIP

 

Routing Information Protocol is an interior or intra-domain routing protocol that uses the

 

 

 

 

distance-vector routing algorithms. RIP is used on the Internet and is common in the NetWare

 

 

 

 

environment as a method for exchanging routing information between routers.

 

 

 

 

 

 

RS-232

 

An EIA standard which is the most common way of linking data devices together.

 

 

 

 

 

 

SDSL

 

Symmetrical Digital Subscriber Line is a symmetrical, bi-directional DSL service that operates on

 

 

 

 

one twisted-pair wire. It can provide data rates up to the T1 rate of 1.544 Mbits/sec and it

 

 

 

 

operates above the voice frequency, so voice and data can be carried on the same wire.

 

 

 

 

 

 

Secondary

 

The P1600 secondary provides concentration, network management, Internet access and

 

 

 

 

routing functions as well but only through the LAN interface.

 

 

 

 

 

 

Server

 

A computer, or a software package that provides a specific kind of service to client software

 

 

 

 

running on other computers.

 

 

 

 

 

 

SMT

 

The SMT (System Management Terminal) is the interface that you use to configure your

 

 

 

 

Prestige.

 

 

 

 

 

 

SNMP

 

System Network Management Protocol is a popular management protocol defined by the

 

 

 

 

Internet community for TCP/IP networks. It is a communication protocol for collecting information

 

 

 

 

from devices on the network.

 

 

 

 

 

 

Splitter

 

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

 

 

 

 

 

 

Standalone

 

Standalone SMT configurations are the same as a secondary, but in this configuration mode, it

 

 

 

 

does not have to work with a primary. You can connect a router to its LAN port.

 

 

 

 

 

 

STP

 

Twisted-pair cable consists of copper-core wires surrounded by an insulator. Two wires are

 

 

 

 

twisted together to form a pair and the pair form a balanced circuit. The twisting prevents

 

 

 

 

interference problems. STP (shielded twisted-pair) provides protection against external

 

 

 

 

crosstalk.

 

 

 

 

 

 

Straight-through

 

A cable that wires a pin to its equivalent pin. This cable connects two dissimilar devices, for

 

 

Ethernet Cable

 

example, a data terminal equipment (DTE) device and a data communications equipment (DCE)

 

 

 

 

device. A straight-through Ethernet cable is the most common cable used.

 

 

 

 

 

 

SUA

 

SUA (Single User Account) is a proprietary ZyXEL implementation of a subset of NAT that

 

 

 

 

supports two types of mapping, Many-to-One and Server - see also NAT.

 

 

 

 

 

 

Subnet Mask

 

A bit mask used to select bits from an Internet address for subnet addressing. The mask is 32

 

 

 

 

bits long and selects the network portion of the Internet address and one or more bits of the

 

 

 

 

local portion.

 

 

 

 

 

 

SYSLOG

 

SYSLOG allows you to log significant system information to a remote server.

 

 

 

 

 

 

T1

 

Twenty-four voice channels packed into a 193 bit frame and transmitted at 1.544 Mbps. The

 

 

 

 

unframed version, or payload, is 192 bits at a rate of 1.536 Mbps.

 

 

 

 

 

 

TCP

 

Transmission Control Protocol. The major transport protocol in the Internet suite of protocols

 

 

 

 

providing reliable, connection-oriented full-duplex streams.

 

 

 

 

 

 

TCP/IP Filter Rules

 

TCP/IP filter rules allow you to base the rule on the fields in the IP and the upper layer protocol,

 

 

 

 

e.g., UDP and TCP headers.

 

 

 

 

 

 

Telco

 

The generic name for telephone companies throughout the world which encompasses RBOCs,

 

 

 

 

LECs and PTTs.

 

 

 

 

 

 

Telnet

 

The virtual terminal protocol in the Internet suite of protocols. Allows users of one host to log into

 

 

 

 

a remote host and act as normal terminal users of that host.

 

 

 

 

 

 

Glossary

M