AVM FRITZ-Box-Fon-WLAN-7570 Router Manual PDF (Setup & Configuration Guide)

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Support by Fax

FRITZ!Box Fon WLAN 7570 vDSL

141

Support by Fax

If necessary, you can reach AVM Support at the fax number:

+49 (0)30 / 39 97 62 66

The following information should be included in your fax to

the Support team:

°

Your name and address.

°

An e-mail address or fax number at which you can be

reached.

°

the serial number of the FRITZ!Box

The serial number is printed on the sticker attached to

the base of the device. Support staff will always check

this number to ensure that you are a registered user.

°

Which

operating

system

are

you

using

(e.g.,

Windows Vista or Windows XP)?

°

How is the FRITZ!Box connected to your computer, wi-

th a network cable or via WLAN?

°

At what step of the installation or in which application

does an error occur or an error message appear? What

is the exact wording of the message?

°

Which firmware does FRITZ!Box use? The firmware ver-

sion is displayed on the “Overview” page of the

FRITZ!Box user interface.

Once you have put together this information, please fax it

to AVM Support. The Support team will assist you in resolv-

ing your problem.

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142

Glossary

6

Glossary

ADSL

abbreviation for Asymmetric Digital Subscriber Line

Designates a fast kind of file transfer that works with stan-

dard copper cables and transports signals in both direc-

tions at different speeds (upstream at 640 Kbit/s and

downstream at up to 9 Mbit/s).

ADSL2

abbreviation for Asymmetric Digital Subscriber Line 2

ADSL 2 (G.992.3) is a further development of the ADSL norm

(G.992.1/G.992.2).

ADSL2 offers range much greater than did the first ADSL

generation, and is significantly more robust than ADSL, as

it can simply switch off interference from single carrier fre-

quencies. This feature allows ADSL2 to prevent synchroni-

zation losses.

With a throughput rate of up to 12 Mbit/s downstream,

ADSL2 offers considerably greater bandwidth than ADSL.

ADSL2 is completely downward compatible, meaning that

terminal equipment compliant with ADSL can also be oper-

ated on ADSL2 lines, although the devices cannot exploit

the advantages of ADSL2.

ADSL2+

abbreviation for extended bandwidth Asymmetric Digital

Subscriber Line 2

ADSL2+ (G.992.5) is a further development of the ADSL

norm (G.992.1/ G.992.2).

ADSL2+ offers a doubled frequency range used for down-

stream transmission, and thus double the maximum band-

width achievable for downstream to 24 Mbit/s.

ADSL2+ is completely downward compatible, meaning that

terminal equipment compliant with ADSL and ADSL2 can al-

so be operated on ADSL2+ lines, although the devices can-

not exploit the advantages of ADSL2+.

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Glossary

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143

ADSL-Controller

An ADSL-Controller is an electronic hardware assembly that

allows a computer to access an ADSL line. ADSL-Controllers

are stationary equipment, included on internal ADSL cards

(for the PCI bus) or in external ADSL modems (with USB or

Ethernet ports).

Alias

Alias means

different

,

else

and

also known as

. An alias is

often a short, catchy substitute for a long, complicated

string of characters, for example, the actual name of the us-

er [email protected] in place of the string

[email protected].

Here

the

name

J.Smith

functions as an alias for

030123456

.

Context menu

The context menu is a menu that is normally not visible.

The context menu opens only when you click a button, a

graphic or a word with the right mouse button. Depending

on where you clicked, the context menu contains only the

most common menu commands for the given object.

If you are using an Apple computer, click the “Ctrl” while

clicking.

Default gateway

see gateway

DHCP

abbreviation for Dynamic Host Configuration Protocol

DHCP is a protocol for the dynamic negotiation of the oper-

ating parameters for the TCP/IP protocol (TCP is a transport

protocol based on the Internet protocol). The computers of

a local IP network (DHCP clients) access the DHCP server as

part of their operating systems’ start procedure.

The central administration of the TCP/IP operation parame-

ters makes it possible to avoid address conflicts caused by

IP addresses accidentally assigned more than once.

DHCP server

The DHCP server assigns each client an IP address that is

not yet been assigned at the present time. The DHCP server

also informs the client of the IP addresses of the DNS serv-

er to be used and of the default gateway. In assigning the IP

addresses the DHCP server selects from a prescribed pool

of IP addresses.

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Glossary

DNS

abbreviation for Domain Name System

Domain Name Service takes care of determining the IP ad-

dress for a given domain name. Domain Name Service is

running on every computer. It accepts the domain name en-

tered by a user and inquires about the corresponding IP ad-

dress at a DNS server known to the service. If a DNS server

cannot answer the inquiry itself, it can inquire about the IP

address (DNS resolution) at other DNS servers.

If the Domain Name Service receives negative information

from the DNS server (domain name not known), it can send

inquiries to other DNS servers it knows or return a corre-

sponding error message to the user. If it receives the de-

sired IP address instead, the application can use the IP ad-

dress to retrieve the destination desired by the user.

This hierarchical system of DNS servers is known as the Do-

main Name System. The addresses of the DNS servers at

which the Domain Name Service is to inquire by default

generally are handed over to the computer by the Internet

Service Provider automatically whenever a connection to

the Internet is established. In local networks addresses can

also be assigned via DHCP. Otherwise they must be entered

manually in the TCP/IP configuration of the PC by the user

or the system administrator.

DSL modem

A DSL modem connects a computer to the Internet via the

DSL line. In contrast to the analog modem, a connection via

the DSL modem does not mean that the telephone line is

busy.

DSL router

A combination of a DSL modem and a router is called a DSL

router.

Dynamic DNS

abbreviation for Dynamic Domain Name System

Dynamic DNS is a service which allows a computer always

to be reached under the same domain name despite con-

stantly changing IP addresses. This means that even pri-

vate users have an economical way of placing their own In-

ternet offers on their computer at home.

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Glossary

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145

It works by transmitting the current IP address to a special

DDNS server each time the IP address changes. Except for

the few seconds between the cancellation of the old IP ad-

dress and the notification of the new IP address, the com-

puter can always be reached at the selected domain name.

Dynamic IP

address

A dynamic IP address is an IP address valid only for the du-

ration of one Internet or network session.

Every computer participating in the Internet must have a

uniquely assigned public IP address. Since only a limited

number of such IP addresses is available, they must be

used sparingly. That is why most of the Internet partici-

pants who dial in to the Internet receive a dynamic IP ad-

dress. They are called dynamic because every participant

receives a new public address that has not been assigned

yet each time he or she dials in to the Internet.

By contrast, dynamic addresses are usually used in local IP

networks because they are easy to handle, and because

using them avoids incorrect IP address entries or uninten-

tional double assignments. The DHCP service is responsi-

ble for assigning unique dynamic IP addresses.

FAQ

abbreviation for Frequently Asked Questions

FAQs are collections with answers to frequently asked

questions on a certain subject area.

Firewall

A firewall protects a computer or local network against at-

tacks from the Internet.

Most firewalls work with packet filters, which merely check

the IP addresses and port numbers of incoming and out-

going data packets and filter the packets according to pre-

scribed rules.

Some firewalls also integrate additional concepts like IP

masquerading and NAT to decouple data traffic by distin-

guishing strictly between the internal and external network.

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