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Glossary
S675IP / USA-CAN eng / A31008-xxxx-xxxx-x-xxxx / glossary.fm / 14.05.2009
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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 dialing (DTMF).
Dynamic IP address
A dynamic IP address is assigned to a network component automatically via
. The dynamic IP address for a network component can change every
time it registers or at certain time intervals.
See also:
DynDNS
Dynamic DNS
Domain names and IP addresses are assigned via
this service is enhanced with "DynamicDNS". This permits the use of
a network component with a dynamic IP address as a
on the
.
DynDNS ensures that a service can always be addressed on the Internet at the
, 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 participant C. Rather than connect everyone in a three-party confer-
ence, 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 custom-
ized settings) and data saved automatically (e.g. entries to the list of callers).
Ethernet network
Wired
.
F
Firewall
You can use a firewall to protect your network against unauthorized 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:
.
Firmware
Software for a device in which basic information is stored for the device's func-
tion. To correct errors or update the device software, a new version of the
firmware can be loaded into the device's memory (firmware update).
Flat rate
Billing system for an
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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