elmeg IP120 / en / elmegIP120_v1 / glossary.fm / 01.08.2012
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elmeg IP120
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Glossary
DSL
Digital Subscriber Line
Data transfer technology which allows Internet access over conventional phone lines. Pre-
requisites: DSL modem and the appropriate 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 connectors 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.
See also:
Fixed 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 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 par-
ticipant C. Rather than connect everyone in a three-party conference, A now transfers partic-
ipant 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
.
Ethernet uses a base band cable for data transmission with a transmission rate of 10 or 100
Mbps or 1 Gbps.
