Gennet-OxyGEN RFA1400.Wv2 Router Manual PDF (Setup & Configuration Guide)

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OxyGEN

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Office

Administrator’s Guide

Dynamic IP Addressing

The automatic assignment of network settings to computers or other networked

devices. Network settings obtained under a dynamic IP addressing scheme are

usually valid for a specific period of time and must be refreshed or reconfigured

in order to continue operation of the device. This is the most common policy

used by ISPs for their customers and the protocols used are either IPCP (part of

PPP) or DHCP. Compare with Static IP Addressing.

Dynamic IP Routing

The use of a special IP routing protocol (e.g.

RIP) for the advertisement and

the application of routing entries in the routing table of a networked device.

Compare with Static IP Routing.

DynDNS

See Dynamic DNS.

Echo Cancellation

One of the two ADSL modes of operation (the other is FDM). In the EC mode,

two separate bands are allocated in the ADSL frequency spectrum: one to

POTS, and one is shared by the Upstream and the Downstream. The Upstream

signal overlaps the lower spectrum of the Downstream signals and this overlap is

resolved by Echo Cancellation techniques.

See FDM.

Encapsulation

In general, encapsulation is the inclusion of one protocol within another one

so that the included protocol is not apparent. In ADSL with encapsulation we

typically refer to the LLC and VCMux methods used for the transmission of IP

packets over the ATM link.

Encryption Key

The key encrypts data over the WLAN, and only wireless PCs configured with

a key that corresponds to the key configured on the OxyGEN miniOffice can

send/receive encrypted data.

EoA

Ethernet over ATM

Ethernet frames are simply encapsulated into the ATM Adaptation Layer 5 (AAL5)

using RFC 1483/2684 bridging. In EoA routed connections the device obtains its

own IP address on the WAN interface and performs routing between the LAN

devices and the Internet, whereas in bridged mode it performs pure Ethernet

bridging between the two networks. In the former case, IP address management

is either static or dynamic with the use of DHCP session management.

Ethernet

The most commonly installed computer network technology, usually using twisted

pair wiring. Ethernet data rates are 10 Mbps and 100 Mbps.

See also 10BASE-T, 100BASE-T, Twisted Pair.

EUI-64

It is derived from the interface’s 48-bit MAC address.

A MAC address

00:1D:1C:06:37:64 is turned into a 64-bit EUI-64 by inserting FF:FE in the mid-

dle:

00:1D:1C:FF:FE:06:37:64.

To form an IPv6 address, the meaning of the

Universal/Local bit (the 7th most significant bit of the EUI-64, starting from 1) is

inverted. To create an IPv6 address with the network prefix 2001:db8:1:1::/64 it

yields the address 2001:db8:1:1:021d:1cff:fe06:3764 (with the underlined U/L bit

inverted to a 1, because the MAC address is universally unique). Factory Defaults

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The process of erasing the

current configuration of a

CPE and restoring the ini-

tial default values for all

parameters.

FDM

Frequency Division Multiplexing

One of the two ADSL modes of operation (the other is EC). In the FDM mode,

three separate bands are allocated in the ADSL frequency spectrum: one to

POTS, one to Upstream and one to Downstream.

See EC.

Filter

See Microfilter.

Firewall

A security device that controls access from the Internet to a local network.

Firmware

Firmware is the software that is embedded in a hardware device’s flash memory

and acts as the control center for the device’s operation.

Frame

Frames, like packets, are packages of data transmitted on a network.

The

difference between frames and packets is that the term "frame" is traditionally

used for OSI Layer-2 protocols (e.g. Ethernet frames) whereas the term "packet"

refers to OSI Layer-3 protocols (e.g. IP packet).

See Packet.

Frequency Band Channel

See Wireless Channel.

FTP

File Transfer Protocol

A protocol (and the corresponding application) used to transfer files between

computers connected to the Internet. Common uses include uploading new or

updated files to a web server, and downloading files from a web server.

Full Duplex

Refers to the transmission of data in both directions of a wire (or other signal

carrier) at the same time. Compare with Half Duplex.

Full LLU

Full Local Loop Unbundling

Full LLU is a form of LLU, where the incumbent operator allows another operator

to use the whole spectrum of frequencies of a local telephony loop. This way the

other operator can offer over the copper twisted pair both DSL and optionally

also traditional telephony (POTS) service. Compare with Shared LLU.

See LLU.

FXO

Foreign Exchange Office

An analog telephony port that receives the analog line with the voice service.

FXO ports are used for connecting to the PSTN through the wall jack or the

Phone port of an ADSL splitter. Compare with FXS.

FXS

Foreign Exchange Station

An analog telephony port delivering the voice service to the subscriber. FXS ports

are used for connecting to devices, like telephones or fax machines. Compare

with FXO.

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GAP

Generic Access Profile

An ETSI standard (EN 300 444) that describes a set of mandatory requirements

to allow any conforming DECT base-station to interoperate with any conforming

DECT handset at the air interface (i.e. the radio connection) and at the level

of procedures to establish, maintain and release telephone calls (Call Control).

GAP also mandates procedures for registering handsets to a base-station.

See DECT.

Gateway

A gateway is a computer or network device that allows or controls access to

another computer or network. In many cases, the term is used to represent an IP

router.

Gbps

Abbreviation of Gigabits per second, or one billion bits per second. Internet data

rates are often expressed in Gbps.

GRE Tunnel

Generic Routing Encapsulation Tunnel

A tunneling mechanisms which uses IP as the transport protocol and can be

used for carrying many different passenger protocols.

See Tunneling.

Half Duplex

Refers to the transmission of data in both directions of a wire (or other signal

carrier), but only in one direction at any given moment.

Compare with Full

Duplex.

Handshake

An automated process of negotiation that dynamically sets parameters of

a communications channel established between two entities before normal

communication over the channel begins.

Hex

Hexadecimal

The representation of numbers in a base-16 format.

This is a very common

notation in computer science, which is governed by binary encoding of data.

Host

A device (usually a computer) connected to a network.

HTTP

Hyper-Text Transfer Protocol

HTTP is the main protocol used to transfer data from web sites so that it can be

displayed by web browsers.

See Web Browser, Web Site.

Hub

A hub is a place of convergence where data arrives from one or more directions

and is forwarded out in all directions.

It connects an Ethernet bridge/router

to a group of PCs on a LAN and allows communication to pass between the

networked devices. In modern networks Ethernet Hubs are replaced by Switches.

See Switch.

IAD

Integrate Access Device

A type of CPE that offers high voice and data functionality, mainly over

broadband networks.

ICMP

Internet Control Message Protocol

An Internet protocol used to report errors and other network-related information.

The ping command makes use of ICMP.

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IEEE

The Institute of Electrical and Electronics Engineers is a technical professional

society that fosters the development of standards that often become national

and international standards.

IGD-UPnP

Internet Gateway Device

IGD is a UPnP device profile that allows UPnP aware clients to work properly from

behind a NAT.

See UPnP.

Inband

A method of information transmission as part of the regular data stream. For

DTMFs, inband is the transmission of DTMF signals as normal audio tones.

Info-tainment

A combination of traditional elements of video, film, graphics, animation, music,

audio, and text for the purposes of providing information and/or entertainment.

Often characterized by hyperlinks among the various media.

Interface

An interface is, generally speaking, the common boundary (and at the same

time the point of contact) between two different substances. For an ADSL CPE,

the term interface is commonly used for the human-machine interaction service

(e.g. Web interface). The term is also frequently used, as an alternative to port,

to refer to the physical connectors on the device.

Interface Group

A group of physical ports in an Ethernet switch belonging to the same Private

VLAN.

See Private VLAN.

Interleaving

A form of error correction that can help reduce the number of errors on an ADSL

line. It helps to stabilize a line that might otherwise suffer frequent disconnections.

One drawback of interleaving is that it introduces latency to the connection.

Internet

The global collection of interconnected networks used for both private and

business communications.

Intranet

A private, company-internal network that looks like part of the Internet (users

access information using web browsers), but is accessible only by employees.

Internet Protocol.

See TCP/IP.

IP Address

Internet Protocol Address

The address of a host (computer) on the Internet, consisting of four numbers,

each from 0 to 255, separated by periods, e.g., 209.191.4.240. An IP address

consists of a network ID that identifies the particular network the host belongs to,

and a host ID uniquely identifying the host itself on that network. A network mask

is used to separate the network ID and the host ID in the IP address. Because

IP addresses are difficult to remember, they usually have an associated domain

name that can be specified instead.

See Domain Name, Network Mask.

IP Filtering

The process of selective acceptance or selective forwarding of IP packets.

Selection criteria can be quite complex, including parameters like the source

and/or destination IP address, TCP/UDP ports, etc.

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IP Header

A special part in the beginning of each IP packet, which contains important

information for the transmission of the packet, like the source and destination IP

addresses.

IP Video

An encoding mechanism that is used to transmit motion video clips over an IP

network (IPTV).

IP Voice

A technology that enables voice traffic to be transmitted over any network that

uses IP, including LANs, WANs, and the Internet.

IPoA

Internet Protocol over ATM

In IPoA connections IP packets are transported over ATM use the same type of

encapsulation as EoA. What is added is an address resolution function to the

ATM PVCs. This is based on the standards RFC 1483/2684 and RFC 1577/2255

IPP

Internet Printing Protocol

A protocol allowing printing over IP networks.

Based on the HTTP protocol, it

allows users to find out about a printer’s capabilities, submit print jobs, find out

the status of a printer or a print job, or cancel a previously submitted job.

IPSec

Internet Protocol Security

A protocol suite for securing Internet Protocol (IP) communications by authenti-

cating and encrypting each IP packet of a data stream.

IPTV

See IP Video.

IPv6

Internet Protocol version 6 (IPv6) is a set of specifications from the Internet

Engineering Task Force (IETF) that is an upgrade of IP version 4 (IPv4).

The

basics of IPv6 are similar to those of IPv4 -- devices can use IPv6 as source and

destination addresses to pass packets over a network, and tools like ping work

for network testing as they do in IPv4, with some slight variations.

However,

IPv6 differs than IPv6 in that IP addresses are lengthened from 32 bits to 128

bits.

This extension enables a considerable future growth of the Internet and

tackles with the issue of the shortage of network addresses. IPv6 also supports

auto-configuration to help correct most of the shortcomings in version 4, and it

has integrated security and mobility features.

ISDN

Integrated Services Digital Network

A WAN oriented data communication service provided by telephone compa-

nies.

ISDN is unique among WAN services in that it provides access both to

the circuit switched public switched telephone network and to packet switched

services, such as X.25 and frame relay. ISDN utilizes digital local facilities and

provides out-of-band signaling capabilities.

ISP

Internet Service Provider

A company that provides Internet access to its customers, usually for a fee.

JavaScript

A scripting language used in many web sites for client-side web development.

JavaScript is not a stand-alone language, but rather an add-on to HTML.

JavaScript functions are usually embedded in or included from HTML pages and,

running locally in a user’s browser, can detect user actions, such as individual

keystrokes.

Jetdirect

See Appsocket / Jetdirect.

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