ETSI ETS 300 242 ed.1 (1992-12)

SLOVENSKI STANDARD
SIST ETS 300 242 E1:2003
01-december-2003
Terminalska oprema (TE) – Oprema za faksimilno skupino 3
Terminal Equipment (TE); Group 3 facsimile equipment
Ta slovenski standard je istoveten z: ETS 300 242 Edition 1
ICS:
33.050.30 Oprema za teleks, teletekst, Equipment for telex, teletext,
telefaks telefax
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
SIST ETS 300 242 E1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 242 E1:2003

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SIST ETS 300 242 E1:2003
EUROPEAN ETS 300 242
TELECOMMUNICATION December 1992
STANDARD
Source: ETSI TC-TE Reference: T/TE 05-05
ICS: 33.020, 33.040.40
Group 3 facsimile
Key words:
Terminal Equipment (TE);
Group 3 facsimile equipment
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1992. All rights reserved.
New presentation - see History box

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ETS 300 242: December 1992
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 242: December 1992
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions.7
4 Abbreviations.7
5 General requirements .8
6 Technical characteristics.8
6.1 General .8
6.2 Features.8
6.3 Transmitter.8
6.3.1 Document dimensions.8
6.3.2 Scanning track.9
6.4 Receiver.9
6.5 Performance .9
6.6 Control procedures for message transmission and reception .10
6.7 Facsimile switching.10
6.7.1 Automatic calling equipment .10
6.7.2 Facsimile to telephone mode switching.10
6.8 Automatic and manual answering.10
6.9 Miscellaneous requirements .10
6.9.1 Special features.10
6.9.2 Extended configurations.11
Annex A (normative): Requirements for the scanner of the facsimile equipment based on test chart
No. 3 of CCITT Recommendation T.21.12
Annex B (normative): Testing.14
B.1 Scope .14
B.1.2 Testing conditions.14
B.1.2.1 Environments for tests .14
B.1.2.2 Power supply limitations.14
B.1.3 Test procedures.14
B.1.4 Protocol test procedures.14
B.1.4.1 Protocol test schedules .15
B.1.4.2 Description of the test tables.15
B.1.4.2.1 Test number .15
B.1.4.2.2 Test type.15
B.1.4.2.3 Tester action.15
B.1.4.2.4 Tester detects.15
B.1.4.2.5 Comments .15
B.1.4.3 Commands/responses list.15
B.1.5 Application service test procedures .16
B.1.5.1 Application service tests.16
B.1.5.2 Description of application service test schedules.16
B.1.6 Definitions and abbreviations.16
B.1.7 Generalities.16
B.2 Tests for CCITT Recommendation T.4.17
B.2.1 Test No. R1 . R4 .17

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ETS 300 242: December 1992
B.2.2 Test No. T1 . T6 . 18
B.3 Tests for CCITT Recommendation T.30 . 19
B.3.1 Test No. TN1 . TN12. 19
B.3.2 Test No. RN1 . RN12 . 19
B.3.3 Test No. TEB10 . TEB11. 20
B.3.4 Test No. TEB20 . TEB25. 20
B.3.5 Test No. TED10 . TED15 . 22
B.3.6 Test No. TED20 . TED25 . 22
B.3.7 Test No. TED30 . TED36 . 23
B.3.8 Test No. REB10 . REB16. 24
B.3.9 Test No. REB20 . REB23. 25
B.3.10 Commands/responses list. 26
B.3.10.1 Content of the DIS/DTC frame . 27
B.3.10.2 Content of the DCS frame used by the tester. 27
B.4 General tests . 28
B.4.1 Test No. L1 . L15. 28
B.4.2 Test No. T10 . T20 . 28
B.4.3 Test No. R10 . R20 . 30
B.5 Test charts. 31
B.5.1 Test of 1-dimensional coding . 31
B.5.2 Test of printing resolution. 32
B.5.3 Testing of the acceptance of lines 5 seconds long . 34
B.5.4 Test chart for 20 ms and copy quality criteria . 34
B.5.4.1 Description of the pattern. 34
B.5.4.2 Description of the whole error-free test chart . 35
B.5.4.3 Test charts including errors . 35
B.5.4.4 Test charts with single errors. 35
B.5.4.5 Reading of the charts received and recorded, interpretation of the results. 36
B.6 Tests for extended facsimile functions . 37
History. 38

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ETS 300 242: December 1992
Foreword
This European Telecommunication Standard (ETS) has been produced by the Terminal Equipment (TE)
Technical Committee of the European Telecommunications Standards Institute (ETSI).

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Blank page

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ETS 300 242: December 1992
1 Scope
This European Telecommunication Standard (ETS) specifies the technical characteristics to be met by
Group 3 facsimile equipment to enable reliable document interchange between compliant equipment.
The ETS does not contain the requirements for Public Switched Telephone Network (PSTN) access,
Safety or Electromagnetic Compatibility.
All tests necessary to check conformance to this ETS are included in Annex B (normative), which is an
integral part of this ETS.
2 Normative references
This ETS incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to, or revisions of any of these publications
apply to this ETS only when incorporated in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ETS 300 001 (1992): "Attachments to Public Switched Telephone Network
(PSTN); General technical requirements for equipment connected to an
analogue subscriber interface in the PSTN".
[2] CCITT Recommendation T.4: "Standardization of Group 3 facsimile apparatus
for document transmission".
[3] CCITT Recommendation T.30: "Procedures for document facsimile
transmission in the general switched telephone network".
[4] CCITT Recommendation T.21: "Standardized test charts for document facsimile
transmission".
3 Definitions
For the purpose of this ETS, the definitions given in CCITT Recommendations T.4 [2], T.30 [3] and T.21
[4] apply along with the following:
Group 3 facsimile terminal equipment: this is referred to throughout this ETS as the "facsimile
equipment".
An extended configuration: includes within its own domain at least two independently addressable sinks
and/or two independently addressable sources of facsimile traffic to the public network. An implementation
which is designed to be completely physically included within a personal computer is considered as an
extended configuration.
4 Abbreviations
For the purpose of this ETS, the abbreviations given in CCITT Recommendations T.4 [2] and T.30 [3]
apply along with the following:
EMC ElectroMagnetic Compatibility
ETS European Telecommunication Standard
ETSI European Telecommunications Standards Institute
PSTN Public Switched Telephone Network
SUT System Under Test

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ETS 300 242: December 1992
5 General requirements
General requirements about the access to the PSTN are not contained in this ETS and reference should
be made to ETS 300 001 [1].
Safety and electromagnetic compatibility (EMC) requirements of the country in which permission to
connect the facsimile equipment is sought shall apply. The source of national information may be found in
the CEPT Yearbook and Approval Information for Telecommunications Terminal Equipment.
6 Technical characteristics
6.1 General
The facsimile equipment shall comply with the requirements of CCITT Recommendation T.4 [2],
paragraphs 1, 2, 3, 4, 5, 6, 7, 8 and CCITT Recommendation T.30 [3], paragraphs 1, 2, 3, 4.3.3.2, 4.3.3.3,
5, and additional requirements as described in this ETS.
NOTE: In Germany, in order to provide reliable document interchange between compliant
equipment an improved input, sensitivity of - 46 dBm will be considered for a certain
period of time.
The testing specification is given in Annex B.
Requirements for the scanner of the facsimile equipment based on test chart No. 3 of CCITT
Recommendation T.21 [4], are contained in Annex A. This applies only if a physical scanner is
implemented.
6.2 Features
Basic feature: a standardized feature which is mandatory for the certificate of conformity.
Optional feature: a standardized feature of facsimile equipment which may be used in a specified way to
supplement the basic features and which incorporates compatibility between facsimile equipment.
Optional features in this ETS are not mandatory but when implemented shall be implemented as
described in this ETS for the certificate of conformity. The applicant shall state which optional features are
to be certified.
Special feature: a non-standardized feature of facsimile equipment which can be used to supplement
basic or optional features but which does not incorporate compatibility between facsimile equipment. A
special feature shall not impair the compatibility of basic or optional features between facsimile equipment.
6.3 Transmitter
For equipment which is capable of sending only A5 and/or A6 size documents, the requirements for
equipment capable of sending A4 size documents shall not be applied.
6.3.1 Document dimensions
The facsimile equipment shall be capable of accepting and scanning documents with dimensions of at
least 212 mm x 299 mm.

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6.3.2 Scanning track
The density of picture elements along the scanned line shall correspond to 1 728 picture elements along a
line length of 215 mm ± 1 %.
The basic scanned line length is 215 mm ± 1 %.
For implementations which use centre alignment of the document in the scanner, the reference position of
the document shall be such that the centre of the document lies between picture elements 851 and 877
over the first 20 mm of the document.
For implementations which use right edge alignment of the document in the scanner, the reference
position of the document shall be such that a point 10 mm from the right edge of the document lies
between picture elements 1 623 and 1 648 over the first 20 mm of the document.
The applicant shall state which implementation has been used.
In addition to the basic scanning line length of 215 mm, other scanned line lengths may be implemented.
The basic scanning density shall be 3,85 lines per mm ± 1 %. In addition, the facsimile equipment may
provide other scanning densities. The selection of the one used for message transmission shall be
controlled by the transmitting station.
The document shall be positioned such that the first line to be coded and transmitted lies between 0 mm
and 4 mm down the document from the top edge.
6.4 Receiver
For equipment which is capable of receiving only A5 and/or A6 size documents, the requirements for
equipment capable of receiving A4 size documents shall not be applied.
The decoded picture elements shall be recorded as if the scanning direction was from left to right with
subsequent recording lines adjacent to and below the previous line. The direction of recording refers to
viewing the received copy in the vertical plane.
The density of picture elements along the recorded line shall correspond to 1 728 picture elements along
a line length of 215 mm ± 1 %.
The effective minimum recorded line length shall be 200 mm.
For implementations which use centre alignment in the printer, the reference position of the recording
medium shall be such that the centre of the recording medium lies between picture elements 851 and 877
over the first 20 mm of the document.
For implementations which use right edge alignment in the printer, the reference position of the recording
medium shall be such that a point 10 mm from the right edge of the recording medium lies between
picture elements 1 623 and 1 648 over the first 20 mm of the document.
The applicant shall state which implementation has been used.
In the case of facsimile equipment limited to A4 length received copies, the position of the recording
medium shall be such that the first line to be recorded lies between 0 mm and 4 mm down the received
copy from the top edge.
6.5 Performance
The performance of the facsimile equipment shall be evaluated using the CCITT Facsimile Test Chart No.
3 detailed in CCITT Recommendation T.21 [4]. Performance tests of the facsimile equipment are
described in Annex A of this ETS.

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6.6 Control procedures for message transmission and reception
The facsimile equipment shall follow the binary coded control procedures detailed in CCITT
Recommendation T.30 [3].
As a basic feature, the facsimile equipment should transmit the appropriate subscriber identification signal
CSI/CIG/TSI (Called Subscriber Identification/Calling Subscriber Identification/Transmitting Subscriber
Identification) according to CCITT Recommendation T.30 [3].
Received image quality
The received image quality criteria, if adjustable, should not be accessible to the operator.
The receiver shall interpret the received image as badly received and send the corresponding (RTN or
PIN) signal (ReTrain Negative or Procedural Interrupt Negative) during phase D of the facsimile procedure
if more than 15 % of the detected lines are faulty.
The receiver shall interpret the received image as received with sufficient quality and send the
corresponding (MCF, RTP, PIP) signal (Message ConFirmation, ReTrain Positive, Procedural Interrupt
Positive) during phase D of the facsimile procedure if less than 5 % of the detected lines are faulty.
6.7 Facsimile switching
When power is not applied, the facsimile equipment shall remain disconnected from the telephone line,
irrespective of the operation of any controls and of the status (e.g. ringing) of the line interface.
6.7.1 Automatic calling equipment
Automatic calling is not a mandatory feature.
6.7.2 Facsimile to telephone mode switching
The facsimile equipment shall disconnect itself from the telephone line:
- when the facsimile call is complete;
- when a timeout has expired as specified in CCITT Recommendation T.30 [3];
- upon disconnection of the power.
6.8 Automatic and manual answering
In the automatic answering mode, if provided, the facsimile equipment shall answer incoming calls only if
at least one of the following conditions exists:
- the facsimile equipment is not in an alarm state due to the lack of consumables;
- the facsimile equipment is able to transmit a message according to operating modes 2-R or 4-R as
per CCITT Recommendation T.30 [3].
If the facsimile equipment is capable of receiving or transmitting a message it shall, upon detection of the
call, answer the call and automatically connect itself to the telephone line.
6.9 Miscellaneous requirements
6.9.1 Special features
Manufacturers may provide special features to those detailed in this specification and CCITT
Recommendation T.4 [2] by utilizing the non-standard facilities commands and responses detailed in
CCITT Recommendation T.30 [3].

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6.9.2 Extended configurations
In the case of an extended configuration the following applies:
Activity log
An activity log shall be provided which contains information regarding the results of communications.
The activity log shall be in non-volatile memory or shall be buffered.

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Annex A (normative): Requirements for the scanner of the facsimile
equipment based on test chart No. 3 of CCITT
Recommendation T.21
Application of TEST CHART No. 3
Operational conditions for the test are as follows:
- standard operational conditions as indicated by the manufacturer;
- resolution of 3,85 lines/mm.
Table A.1
Interpretation of zones on original chart Requirements on transmitted document
Zone 3.1 Zone 3.1
Band of alternating black and white lines, This zone shall be reproduced.
thickness 5 mm.
Permits measurement of scanning distortion
and adjustment of the black and white levels.
Zone 3.2 Zone 3.2
2 density level bands in complementary order. The grey gradation (level between
These scales permit measurement of the 0,2 and 1,2) may be represented
scanners' analogue response curves and with black color.
definition of the white/black decision Levels 0,8; 1; 1,2 shall not be
threshold level in digital transmission devices. represented with white color.
The two bands, covering nearly the width of the
page, are reversed for verification of the
uniformity of the scanner's response
over the entire length of the horizontal line.
The densities, varying between 0,2 and 1,5,
are indicated in the margin of each of the
bands.
Zone 3.3 Zone 3.3
Black band covering the entire page width. This zone shall be reproduced.
Permits adjustment of characteristic "black"
signals through the entire sequence of the
electronic devices.
Zone 3.4 - 3.5 Zone 3.4 - 3.5
Isolated black and white lines, variable thick- Black lines: at least the line with a
ness, 2 complementary bands. thickness greater than 100 microns shall
Using this group, it is possible to define the be reproduced. The whole black color shall
limits of resolution for isolated black and white be obtained for lines with thickness greater
lines. than 250 microns. White lines: it shall be
Line thicknesses are indicated in microns. possible to recognize the lines with a thick-
ness greater than 200 microns. The lines
shall be completely white for thickness
greater than 350 microns.
(continued)

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Table A.1 (concluded)
Interpretation of zones on original chart Requirements on transmitted document
Zone 3.9 Zone 3.9
Alternating lines, 4 lines per mm (black and The black lines on the received copy shall
white line thickness 250 microns). be separated.
Permits verification of standardized facsimile
machine definition.
Zone 3.10 Zone 3.10
Alternating lines, 2 lines per mm (black and The black lines on the received copy shall
white line thickness 500 mm). be separated.
This scale represents the minimum permittable
definition for a facsimile machine.
Zone 3.11 Zone 3.11
Vertical and horizontal bundles (converging The 15 black lines on vertical bundles shall
patterns). be distinguished from thickness of
This group of 3 bundles of converging lines 300 microns. The horizontal bundle is not
permits quantization of the limits of horizontal considered.
and vertical definitions. The numbers shown
along the bundles indicate the thickness of black
and white lines in microns.
Zone 3.13 Zone 3.13
Black lines, thickness 250 microns, spaced Black lines shall be reproduced.
750 microns.
Zone 3.14 Zone 3.14
Black lines, thickness 250 microns, spaced They shall be reproduced.
1 000 microns.
The two scales of 3.13 and 3.14 simulate
character downstrokes.
Zone 3.22 Zone 3.22
4 groups of arrows and lines. See Annex B (normative).
These groups permit quantization of framing
defects of the facsimile document.
The numbers indicate distances in millimeters
measured from the edge of the test pattern.

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Annex B (normative): Testing
B.1 Scope
This annex contains test procedures to verify the protocol and application service conformance of CCITT
Group 3 facsimile equipment.
These test procedures confirm compliance with the basic requirements of this ETS but do not guarantee
full compatibility between facsimile equipment.
B.1.2 Testing conditions
B.1.2.1 Environments for tests
All tests shall be performed at:
- an ambient temperature in the range 15 °C to 35 °C;
- a relative humidity in the range 25 % to 75 %;
- an air pressure in range 86 kPa to 106 kPa;
except that tests shall not be performed outside the operating limits for the Group 3 facsimile equipment
as stated by the applicant.
B.1.2.2 Power supply limitations
For Group 3 facsimile equipment that are directly powered from the mains supply, all tests shall be carried
out within ± 5 % of the normal operating voltage as declared by the applicant. If the power supply is ac the
tests shall be conducted within ± 4 % of the stated frequency as declared by the applicant.
If Group 3 facsimile equipment are powered by other means and those means are not supplied as part of
the facsimile equipment, e.g. batteries, stabilized ac supplies, dc, etc., all tests shall be carried out within
the power supply limit declared by the applicant.
All tests described in this ETS shall be carried out external to the facsimile equipment and shall not
require the applicant to provide special hardware or software to enable those tests to be performed.
In order to facilitate tests, the applicant shall present the System Under Test (SUT) with a physical printer
(not required for send-only-terminals) and a physical scanner (not required for receive-only-terminals),
each of them being located in the same private domain, and connected locally or through a LAN or a
PABX or etc., to fulfill the requirements of the present specification.
B.1.3 Test procedures
The test procedures are applicable to all facsimile equipment. Optional tests are only applicable to
facsimile equipment in accordance to the 2nd paragraph (Optional features) of subclause 6.2.
The test procedures are independent from any particular test equipment.
Tests are performed separately for transmit and receive functions with all tests being carried out. For
efficiency in testing, tests may be combined.
The test procedures consist of two types. Protocol test procedures and application service test
procedures. Protocol test procedures test the conformance of a facsimile equipment to CCITT
Recommendation T.30 [3] and to this ETS. Application service test procedures test the confo
...