Siemens GIGASET A580 User Manual page 175

Glossary
DSL
Digital Subscriber Line
Data transfer technology that allows Internet access with, for e.g. 1.5
over a conventional telephone line. Preconditions: DSL modem and the appro-
priate 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 connec-
tors converge.
DTMF
Dual Tone Multi-Frequency
Another description for dual tone multi-frequency dialling (DTMF).
Dynamic IP address
A dynamic IP address is assigned to a network component automatically via
DHCP. The dynamic IP address for a network component can change every
time it registers or at certain time intervals.
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Static IP address
DynDNS
Dynamic DNS
Domain names and IP addresses are assigned via DNS. For
addresses this service is enhanced with "Dynamic DNS". This permits the use
of a network component with a dynamic IP address as a
Internet. DynDNS ensures that a service can always be addressed on the
Internet under the same
E
ECT
Explicit Call Transfer
Participant A calls participant B. The participant puts the connection on hold
and calls participant C. Rather than connect everyone in a three-party confer-
ence, A now transfers participant B to C and hangs up.
EEPROM
Electrically Eraseable Programmable Read Only Memory
Memory building block in your phone with fixed data (e.g. default and custom-
ised settings) and data saved automatically (e.g. entries to the list of callers).
Ethernet network
Wired LAN.
F
You can use a firewall to protect your network against unauthorised external
Firewall
access. This involves combining various measures and technologies (hard and/
or software) to control the flow of data between a private network you wish to
protect and an unprotected network (e.g. the Internet).
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NAT.
Firmware Device software in which basic information is saved for the functioning of a
device. A new version of the firmware can be loaded into the device's memory
(firmware update) to correct errors or update the device software.
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Domain name irrespective of the current IP address.
Mbps
Dynamic IP
Server on the