Gigaset A510IP Manual page 160

Glossary
D
DHCP
Dynamic Host Configuration Protocol
Internet protocol that handles the automatic assignment of IP addresses to Network subscrib-
ers. The protocol is made available in the network by a server. A DHCP server can, for example,
be a router.
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 can only 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 components remain secure behind the
firewall.
DNS
Domain Name System
Hierarchical system that permits the assignment of IP addresses to Domain names that are eas-
ier to memorise. 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(s) on the Internet (e.g., Gigaset.net). 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 e.g., 1.5 Mbps over a conventional tel-
ephone line. Prerequisites: DSL modem and the appropriate service offered by the Internet pro-
vider.
DSLAM
Digital Subscriber Line Access Multiplexer
The DSLAM is a switch cabinet in an exchange at which all subscriber connectors converge.
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