Siemens OptiPoint 410 Service Manual download pdf (Page 85)

Abbreviations and Specialized Terms Alphabetical Reference

Layer 3

layer (Network Layer) of the 7-layer OSI model for describing the data

transmission interfaces.

LDAP

Abbreviation for "Lightweight Directory Access Protocol".

Simplified protocol for accessing standardized directory systems, e.g., a

company telephone directory.

LCD

Abbreviation for "Liquid Crystal Display".

Display of numbers, text or graphics with the help of liquid crystal technology.

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., Æ 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

Æ 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.

Port

Ports are used in Æ IP networks to permit several communication connec-

tions simultaneously. Different services often have different port numbers.

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Siemens OptiPoint 410 Service Manual Page 85