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191

Glossary

Gigaset C470-475 IP / EN for IM-Ost / A31008-xxxx-xxxx-x-xxxx / glossary.fm / 18.12.07

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DHCP

Dynamic Host Configuration Protocol

Internet protocol that handles the automatic assignment of IP addresses to Network

subscribers. The protocol is made available in the network by a server. A DHCP server

can be a router for example.
The phone contains a DHCP client. A router that contains a DHCP server can assign the

IP addresses for the phone automatically from a defined address block. The dynamic

assignment means that several Network subscribers can share one IP address,

although they use it alternately and not simultaneously.
With some routers you can specify that the IP address for the phone is never changed.

Displayed name

VoIP provider feature. You can specify any name that is to be shown to the other party

during a call instead of your phone number.

DMZ (Demilitarised Zone)

DMZ describes a part of a network that is outside the firewall.
A DMZ is set up, as it were, between a network you want to protect (e.g. a LAN) and a

non-secure network (e.g. the Internet). A DMZ permits unrestricted access from the

Internet to only one or a few network components, while the other network compo-

nents remain secure behind the firewall.

DNS

Domain Name System

Hierarchical system that permits the assignment of IP addresses to Domain names that

are easier to note. This assignment has to be managed by a local DNS server in each

(W)LAN. The local DNS server determines the IP address, if necessary by enquiring about

superordinate DNS servers and other local DNS servers on the Internet.
You can specify the IP address of the primary/secondary DNS server.
See also: DynDNS.

Domain name

Name of one (of several) Web server on the Internet (e.g. Siemens Home) The domain

name is assigned to the relevant IP address by DNS.

DSCP

Differentiated Service Code Point

See Quality of Service (QoS).

DSL

Digital Subscriber Line

Data transfer technology that allows Internet access with, for e.g., 1.5 Mbps over a con-

ventional telephone line. Preconditions: DSL modem and the appropriate service

offered by the Internet provider.

DSLAM

Digital Subscriber Line Access Multiplexer

The DSLAM is a switch cabinet in an exchange at which all subscriber connectors con-

verge.

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