Handleiding Philips LPF 940 (pagina 35 van 40) (Engels)

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Glossary 35

Fax Groups

Fax machines are classified in terms of internationally

standardised fax groups based on their transfer type and

speed. Connections between two devices of different

groups is possible; the lowest common transfer rate is se-

lected. The determination of the speed takes place during

the handshake (see Handshake). Fax groups 1 to 3 are an-

alogue fax machines. Nowadays, groups 1 and 2 are hardly

to be found any longer; fax machines of group 3—which

have a transfer speed that ranges from 9,600 to

33,600¦bps—are currently most standard. Group 4 fax ma-

chines are digital devices that function exclusively on

ISDN systems. They have a maximum transfer speed of

64,000¦bps.

Fax Polling

With active fax polling, one can retrieve a document from

another fax machine. For fax polling from a larger compa-

ny offering several polling services, you can also enter sub-

addresses / direct-dial numbers. In order to do this, you

must insert a dialling pause between the fax number and

the sub-address (see Dialling Pause).

Fax Signal, CNG Tone (= Calling Signal)

The tone that a fax machine sends out to announce a fax

transmission. When the CNG tone occurs, the fax switch

of the device recognises an incoming fax call and starts the

fax reception.

Fax Switch

The fax switch checks incoming telephone calls and con-

trols the ringing behaviour of the fax machine. According

to the selected mode, fax transmissions will be received ei-

ther automatically or manually.

Handshake

The handshake is the initial and final phase of a fax trans-

mission. After establishing of the connection, fax machines

check the group affiliation and features such as size com-

pression or grey tones. After the fax transmission has been

completed and before the connection is terminated, the re-

ceiving device confirms receipt of the transmission (see Fax

Groups).

Hard modem

The hard modem is a fixed, built-in modem. In contrast to

the soft modem, its features and functions are fixed and

thus cannot be changed (see Soft Modem, see Modem).

ISDN

Integrated Services Digital Network

ITU

International Telecommunications Union (UN organisa-

tion)

Journal

The journal contains information pertaining to the last tel-

ephone calls as well as to sent and received faxes and SMS

messages. The journal can be printed out manually or the

machine can be set to dispense automatic print-outs at spe-

cific times.

LCD

Liquid Crystal Display

LED

LED: Light Emitting Diode

Memory

If there is no paper or toner in your device, the device will

store incoming fax transmissions in its memory. SMS mes-

sages are stored in the SMS memory.

Modified Huffmann (encoding process for faxes, see En-

coding)

MHC

Modified Huffmann Code (encoding process for faxes, see

Encoding)

MMR

Modified Modified Read (encoding process for faxes, see

Encoding)

Modem

A modem converts digital computer signals into acoustic

signals and vice versa. Analogue telephone lines transfer

only acoustic signals, not digital signals (see Hard Modem,

see Soft Modem).

Modified Read (encoding process for faxes, see Encoding)

MRC

Modified Read Code (encoding process for faxes, see En-

coding)

Outside Line Access Code

The outside line access code is the number or letter that

must be dialled before the actual telephone number on a

telephone of a private branch exchange in order to estab-

lish a connection to the public telephone network (see Pri-

vate Branch Exchange).

PABX/PBX

Private Automatic Branch Exchange

Parallel Connection

see Additional Devices

Plug’n’Print Card

Smart card used to set the toner level memory to full after

installing new toner cartridges.

Polling

see Fax Polling

Private Branch Exchange

Private branch exchanges are common in larger compa-

nies. Even private ISDN systems can be branch exchanges.

To establish a connection to the public telephone network

from a private branch exchange, one must dial a number

or press a key before the actual telephone number; in most

cases this is zero (see Outside Line Access Code).

PSTN

Public Switched Telephone Network

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