DTMF
Dual Tone Multi Frequency (tone dialling system)
Dynamic IP address
In contrast to a static IP address, a dynamic IP address is assigned
temporarily by DHCP. Network components such as the web server
or printer usually have static IP address, while clients such as note-
books or workstations usually have dynamic IP addresses.
E1/T1
E1: European variant of the 2.048 mbps ISDN Primary Rate Inter-
face, which is also called the E1 system.
ECB
Electronic Code Book mode
ECT
Explicit Call Transfer. This performance feature allows two external
connections to be transferred without blocking the two B channels of
the exchange connection.
Electronic mail
Emergency numbers
You urgently need to contact the policy, fire brigade or another tele-
phone number. To make things worse, all the connections are busy.
However, you have informed your PBX of the telephone numbers
that need to be contactable in an emergency. If you now dial one of
these numbers, it is recognised by the PBX and a B channel of the
T-ISDN is automatically freed up for your emergency call. Emer-
gency calls are not subject to configuration restrictions. If "Calling
with prefix plus code number" is set for a a connection, the internal
connection is busy. To make an external call, first dial 0 and then
the required emergency number.
Encapsulation
Encapsulation of data packets in a certain protocol for transmitting
the packets over a network that the original protocol does not dir-
ectly support (e.g. NetBIOS over TCP/IP).
Encryption
Refers to the encryption of data, e.g. MPPE.
Entry of external
connection data
In the ex works setting, all external connections made and received
via your PBX are recorded and stored in the form of connection data
records.
ESP
Encapsulating Security Payload
ESS
The Extended Service Set describes several BSS (several access
points) that form a single, logical wireless network.
Ethernet
A local network that connects all devices in the network (PC, print-
ers, etc.) via a twisted pair or coaxial cable.
Teldat GmbH
Glossary
bintec Rxxx2/RTxxx2
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