Gigaset SL75 WLAN User Manual page 132

D
DHCP (Dynamic Host Configuration Protocol)
Internet protocol that regulates the
automatic assignment of IP addresses
to network subscribers. The protocol is
made available in the network by a
server. A router, for example, can be a
DHCP server.
The handset contains a DHCP client. A
router that contains a DHCP server can
assign the IP addresses for the handset
automatically from a defined address
block. This dynamic assignment means
that several subscribers can share one
IP address, although they use it alter-
nately and not simultaneously.
With some routers you can specify that
the IP address for the handset is never
changed.
Displayed name
Feature provided by your SIP provider.
You can specify any name that is to be
shown to the other party call instead of
your phone number.
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 of
superordinate DNS servers and other
local DNS servers in the Internet.
You can specify the IP address of the
primary/secondary DNS server.
See also: DynDNS.
Domain Name
Name of one (or several) Web server(s)
on the Internet (e.g. Siemens-Home).
The domain name is assigned to the rel-
evant IP address by DNS.
DSCP (Differentiated Service Code Point)
See Quality of Service.
DSL (Digital Subscriber Line)
Data transfer technology which allows
Internet access at e.g. 1.5 Mbps over
conventional phone lines. Require-
ments: DSL modem and the appropri-
ate 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 con-
nectors converge.
DTIM (Delivery Traffic Indicator MAP)
Like the TIM, the DTIM is a list on the
access point/WLAN router. The DTIM
beacon is a broadcast signal that is
sent with a larger delay than the TIM
beacon. It is set on the access point/
WLAN router as a multiple of the TIM
beacon interval. As a rule, WLAN
devices are only activated with the
DTIM beacon to increase the execution
time.
Dynamic IP Address
A dynamic IP address is assigned to a
network component automatically via
DHCP. The dynamic IP address for a net-
work component can change every
time it registers or in certain time inter-
vals.
See also: Static IP address
DynDNS (Dynamic DNS)
DNS is used to assign domain names
and IP addresses. For dynamic IP
addresses this service is now
enhanced with what is known as
Dynamic DNS (DynDNS). It enables the
use of a network component with a
dynamic IP address as server on the
Internet. DynDNS ensures that a serv-
ice can always be addressed on the
Internet under the same domain name
irrespective of the current IP address.
Glossary
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