Siemens Gigaset 150 Specifications Page 170

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Glossary
Gigaset A510IP / IM-MEA en / A31008-M2230-A601-1-UZ19 / Glossary.fm / 10.10.2011
Version 4, 16.09.2005
DTMF
Dual Tone Multi-Frequency
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.
See also: Fixed IP address.
DynDNS
Dynamic DNS
Domain names and IP addresses are assigned via DNS. For Dynamic IP addresses this service is
enhanced with "Dynamic DNS". This permits the use of a network component with a dynamic IP
address as a Server on the Internet. DynDNS ensures that a service can always be addressed on
the Internet under the same Domain name, regardless of the current IP address.
E
ECT
Explicit Call Transfer
Participant A calls participant B. The participant puts the connection on hold and calls partici-
pant C. Rather than connect everyone in a three-party conference, A now transfers participant
B to C and hangs up.
EEPROM
Electrically Erasable Programmable Read Only Memory
Memory building block in your phone with fixed data (e.g., default and customised settings)
and data saved automatically (e.g., call list entries).
Ethernet network
Wired LAN.
F
Firewall
You can use a firewall to protect your network against unauthorised external access. This
involves combining various measures and technologies (hardware 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).
See also: NAT.
Firmware
Device software in which basic information is saved for the functioning of a device. To correct
errors or update the device software, a new version of the firmware can be loaded into the
device's memory (firmware update).
Fixed IP address
A fixed IP address is assigned to a network component manually during network configuration.
Unlike the Dynamic IP address, a fixed IP address does not change.
Flat rate
Billing system for an Internet connection. The Internet provider charges a set monthly fee.
There are no additional charges for the duration of the connection or number of connections.
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