BinTec RS120 Reference Manual page 539

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bintec RS Series
Encryption Refers to the encryption of data, e.g. using MPPE.
ESP Encapsulating Security Payload (ESP) is a protocol for IPSec. It
uses protocol number 50 and supports data encryption and authen-
tication.
Ethernet Ethernet is a specification for cable data networks. Ethernet works
on the first and second layer of the OSI model.
Euro ISDN Standard ISDN in Europe, based on the DSS1 signalling protocol.
Eurofile transfer Eurofile transfer (EFT) is a protocol for sharing files over ISDN.
Extension number See Point-to-point ISDN access and Direct dial-in (VoIP).
Filter A filter comprises a number of criteria (e.g. protocol, port number,
source and destination address). If these criteria match a data pack-
et, the data packet can be subjected to a particular action (forward,
reject, ...). This creates a filter rule.
Filter rule A rule that defines which data packets should or should not be
transmitted by the gateway.
Firmware The firmware (system software) is programming code that is per-
manently embedded in the device. It provides the device's functions.
Fragmentation If the overall length of the data packet is greater than the Maximum
Transmission Unit (MTU) of the network interface, the data packet
has to be broken down into multiple physical data blocks using IP
fragmentation. The reverse process is known as reassembly.
Frame A data frame is an information unit (Protocol Data Unit) in the data
link layer in the OSI model.
Frame relay Frame relay is a data transmission technology and upgrade of X.25
(smaller packets, less error checking). Frame relay is primarily used
for GSM networks.
FTP The File Transfer Protocol (FTP) regulates data transmission in IP
networks. It regulates the exchange between FTP server and client.
Full-duplex With full-duplex, data can be sent and received simultaneously over
a line.
G.991.1 Data transmission recommendation for HDSL.
G.991.2 Data transmission recommendation for SHDSL.
Glossary
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