Siemens optiPoint 410 entry Administrator's Manual page 230

Alphabetical Reference
LDAP
Abbreviation for "Lightweight Directory Access Protocol".
Simplified protocol for accessing standardized directory systems, e.g., a
company telephone directory.
LED
Abbreviation for "Light Emitting Diode".
Cold light illumination in different colours at low power consumption.
MAC
Abbreviation for "Medium Access Control Address".
A 48-bit address with the help of which a terminal device (e.g., ! IP tele-
phone or Network card) identifies itself uniquely in a network all over the
world.
MIB
Abbreviation for "Management Information Base".
Database containing descriptions of error messages of the devices and
functions in a network.
PBX
Abbreviation for "Private Branch eXchange".
Private telephone system that connects the different internal devices to
the ISDN network
PING
Abbreviation for "Packet Internet Groper".
A program to test whether a connection can be made to a defined
! IP target. Data is sent to the target and returned from there during the
test. The result of the test displays the success / failure of the transmission
and possible additional information such as the transmission time.
PoL
Abbreviation for "Power over LAN".
Port
Ports are used in ! IP networks to permit several communication connec-
tions simultaneously. Different services often have different port numbers.
QoS
Abbreviation für „Quality of Service".
Additional information see ! page 46.
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