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Sagemcom · FAX 4560 · FAX 4565 · FAX 4570 · FAX 4575
EN
Encoding
The data of your fax transmission are encoded and
compressed for the transmission. The minimum
standard is MH (Modified Huffmann). Better encod-
ing methods are MR (Modified Read) or MMR (Mod-
ified Modified Read).
Error Correction Mode (ECM)
The ECM method reduces transmission errors that
result, for example, from bad telephone lines,
thereby reducing the duration of transmissions. Both
of the connected fax machines must support ECM.
Fax Groups
Fax machines are classified in terms of internation-
ally 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 selected. The determination of the
speed takes place during the handshake (see Hand-
shake). Fax groups 1 to 3 are analogue fax machines.
Nowadays, groups 1 and 2 are hardly to be found any
longer; fax machines of group 3—which have a trans-
fer speed that ranges from 9,600 to 33,600¦bps—are
currently most standard. Group 4 fax machines are
digital devices that function exclusively on ISDN sys-
tems. 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 company 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
controls the ringing behaviour of the fax machine.
According to the selected mode, fax transmissions
will be received either automatically or manually.
Flash Key (R-key)
With the flash key, you can make use of additional
telephone services if these special functions are ena-
bled for your telephone line. The R key has replaced
the hook-flash function. (see Call Waiting, Call-tog-
gling).
Handshake
The handshake is the initial and final phase of a fax
transmission. After establishing of the connection,
fax machines check the group affiliation and features
such as size compression or grey tones. After the fax
transmission has been completed and before the
connection is terminated, the receiving device con-
firms receipt of the transmission (see Fax Groups).
Hook-Flash Function
See Flash Key
ISDN
Integrated Services Digital Network
ITU
International Telecommunications Union (UN organ-
isation)
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.
MH
Modified Huffmann (encoding process for faxes, see
Encoding)
MMR
Modified Modified Read (encoding process for faxes,
see Encoding)
MR
Modified Read (encoding process for faxes, see
Encoding)
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 establish a connection to the public tele-
phone network (see Private Branch Exchange).
PABX/PBX
Private Automatic Branch Exchange
Polling
see Fax Polling
POTS
Plain Old Telephone Service
Private Branch Exchange
Private branch exchanges are common in larger com-
panies. 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
Pulse Dialling
A dialling process that is used in older telephone net-
works. You hear a clicking for each number dialled
(see Tone Dialling).
