Dual Tone
Another description for dual tone
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 inter- vals.
See also: Static IP addressDynDNSDynamic DNS
Domain names and IP addresses are realised via DNS. For Dynamic IP addresses this service is now enhanced with
E
ECTExplicit Call Transfer
Participant A calls Participant B. He puts the connection on hold and calls Participant C. Rather than connect everyone in a
Electrically Eraseable Programmable Read Only Memory
Your phone's storage chip with fixed data
Wired LAN.
Glossary
F
FirewallYou can use a firewall to protect your network against unauthorised external 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).
See also: NAT.
FirmwareDevice 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.
Flat rateSystem of billing for an Internet con- nection. The Internet provider charges a set monthly fee. There are no additional charges for the duration of the connection or number of connections.
FragmentationData packets that are too big are split into smaller packets (fragments) before they are transferred. They are put together again when they reach the recipient (defragmented).
Full duplexData transmission mode in which data can be sent and received at the same time.
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