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- CCITT T.563
- THE INTERNATIONAL
- TELEGRAPH AND TELEPHONE
- CONSULTATIVE COMMITTEE
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- TERMINAL EQUIPMENT AND PROTOCOLS
- FOR TELEMATIC SERVICES
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- TERMINAL CHARACTERISTICS FOR
- GROUP 4 FACSIMILE APPARATUS
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- Recommendation T.563
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- IMPORT Geneva, 1991
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- FOREWORD
- The CCITT (the International Telegraph and Telephone Consultative
- Committee) is the permanent organ of the International Telecommunication Union
- (ITU). CCITT is responsible for studying technical, operating and tariff
- questions and issuing Recommendations on them with a view to standardizing
- telecommunications on a worldwide basis.
- The Plenary Assembly of CCITT which meets every four years, establishes
- the topics for study and approves Recommendations prepared by its Study Groups.
- The approval of Recommendations by the members of CCITT between Plenary
- Assemblies is covered by the procedure laid down in Resolution No. 2 (Melbourne,
- 1988).
- Recommendation T.563 was prepared by Study Group VIII and was approved
- under the Resolution No. 2 procedure on the 18th of January 1991.
-
- ___________________
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- CCITT NOTE
- In this Recommendation, the expression "Administration" is used for
- conciseness to indicate both a telecommunication Administration and a recognized
- private operating agency.
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- F ITU 1991
- All rights reserved. No part of this publication may be reproduced or utilized in
- any form or by any means, electronic or mechanical, including photocopying and
- microfilm, without permission in writing from the ITU.
- Recommendation T.563
- Recommendation T.563
- TERMINAL CHARACTERISTICS FOR GROUP 4 FACSIMILE APPARATUS
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- (Revised 1990)
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- CONTENTS
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- 1 General
- 2 Scope of Recommendation concerning Group 4 facsimile apparatus
- 3 General characteristics of the apparatus
- 4 Mixed mode capabilities
- 5 Communications
- 6 Network-related requirements
- 7 Indicators
- 8 Access to facsimile MHS
- 9 Implementation of apparatus
- Annex A ù Guaranteed reproducible area for Group 4 apparatus conforming to
- Recommendation T. 563
- Appendix I ù Communication environment establishment
- The CCITT,
- considering
- (a) that Recommendation T.2 refers to Group 1 type apparatus for ISO A4
- document transmission over a telephone-type circuit in approximately six minutes;
- (b) that Recommendation T.3 refers to Group 2 type apparatus for ISO A4
- document transmission over a telephone-type circuit in approximately three
- minutes;
- (c) that Recommendation T.4 refers to Group 3 type apparatus for ISO A4
- document transmission over a telephone-type circuit in approximately one minute;
- (d) that there is a demand for Group 4 apparatus which incorporates means
- for reducing the transmission time and assures essentially error-free reception
- of the documents;
- (e) that telematic terminals including Group 4 facsimile apparatus are to
- be standardized, taking into account the commonality among these terminals;
- (f) that there is a demand for mixed mode of operation where both facsimile
- coded information and character coded information can be treated within a page by
- the same apparatus;
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- Recommendation T.563 PAGE17
- unanimously declares
- that Group 4 facsimile apparatus as defined in Recommendation T.0 should
- be designed and operated according to the following standard.
- 1 General
- 1.1 Group 4 facsimile apparatus is used mainly on public data networks (PDN)
- including circuit-switched, packet-switched, and the integrated services digital
- network (ISDN). The apparatus may be also used on the public switched telephone
- network (PSTN) where an appropriate modulation process will be utilized.
- 1.2 The procedures used with Group 4 facsimile apparatus enable it to transmit
- and reproduce image coded information essentially without transmission errors.
- 1.3 Group 4 facsimile apparatus has the means for reducing the redundant
- information in facsimile signals prior to transmission.
- 1.4 The basic image type of the Group 4 facsimile apparatus is black and
- white.
- Other image types, e.g. grey scale image or colour image are for further
- study.
- 1.5 There are three classes of Group 4 facsimile terminals:
- ù Class I ù Minimum requirement is a terminal able to send and receive
- documents containing facsimile encoded information (in accordance with
- Recommendation T.6, T.503 and T.521).
- ù Class II ù Minimum requirement is a terminal able to transmit documents
- which are facsimile encoded (in accordance with Recommendations T.6,
- T.503 and T.521). In addition, the terminal must be capable of
- receiving documents which are facsimile coded (in accordance with
- Recommendations T.6, T.503 and T.521). Teletex coded (in accordance
- with the basic coded character repertoire as defined in
- Recommendations T.60 and T.61), and also mixed-mode documents (in
- accordance with Recommendation T.561).
- ù Class III ù Minimum requirement is a terminal which is capable of
- generating, transmitting and receiving facsimile coded documents (in
- accordance with the Recommendations T.6, T.503 and T.521), Teletex
- coded documents (in accordance with the basic coded character
- repertoire as defined in Recommendations T.60 and T.61), and mixed-mode
- documents (in accordance with Recommendation T.561). See Note.
- Note ù The above definitions are extracted from Study Group I where
- "terminal" is used instead of "apparatus".
- 2 Scope of Recommendations concerning Group 4 facsimile apparatus
- 2.1 This Recommendation defines the general aspects of Group 4 facsimile
- apparatus.
- 2.2 The rules to be followed in the Group 4 facsimile services are defined in
- Recommendation F.184.
- 2.3 The Group 4 facsimile coding scheme and facsimile control functions are
- defined in Recommendation T.6.
- 2.4 Terminal supporting Group 4 facsimile mode of operation communicates with
- unique procedures that are described as follows:
- a) the interface to the physical network is defined in this
- Recommendation. See Note;
- b) the transport end-to-end control procedure is defined in Recommendation
- T.70;
- c) Group 4 facsimile control procedures are defined in
- Recommendation T.62;
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- PAGE16 Recommendation T.563
- d) Group 4 facsimile communication application profile is defined in
- Recommendation T.521;
- e) Group 4 facsimile document application profile is defined in
- Recommendation T.503.
- Note ù Recommendation T.71 may be applicable for PSTN operation.
- 2.5 When operating as mixed-mode terminals, Recommendation T.561 applies.
- 2.6 When operating as basic Teletex terminals, Recommendations T.60 and T.61
- apply.
- 3 General characteristics of the apparatus
- 3.1 Basic characteristics
- 3.1.1 The Group 4 facsimile apparatus provides the means for direct document
- transmission from any subscriber to any other subscriber.
- 3.1.2 All apparatus participating in the international Group 4 facsimile service
- has to be compatible with each other at the basic level defined in this
- Recommendation. Additional operational functions may be invoked.
- 3.1.3 The range of data rates is described in S 6. Detailed arrangements on a
- national level are left to the Administrations concerned, as it is recognized
- that national implementation of the Group 4 facsimile service on various types of
- network may involve national operation at different data throughput rates.
- 3.1.4 The page is the basis for facsimile message formatting and transmission.
- Both A4 and North American paper formats are taken into account.
- 3.1.5 Facsimile coding schemes are applied in order to reduce the redundant
- information in facsimile signals prior to transmission.
- 3.1.6 The apparatus must have the ability to reproduce facsimile messages. The
- content, layer and format of facsimile messages must be identical at the
- transmitting and receiving apparatus.
- 3.1.7 The reproducible area is defined within which facsimile messages are
- assured to be reproduced. (See S 3.2.6.)
- 3.1.8 The Group 4 facsimile apparatus should provide means for automatic
- reception. In addition, Class II/III apparatus should provide means for automatic
- reception of Teletex and mixed mode documents.
- 3.1.9 All classes of Group 4 facsimile apparatus shall incorporate the functions
- defined as basic for the Group 4 facsimile service in S 3.2 below. In addition,
- optional functions can be incorporated. In this Recommendation, the optional
- functions are divided into CCITT standardized options and nationally and/or
- privately specified options.
- 3.2 Basic functions
- 3.2.1 Group 4 facsimile mode of operation shall be capable of handling:
- a) communication application profile as defined in Recommendation T.521;
- b) document application profile as defined in Recommendation T.503;
- c) the basic facsimile coding scheme as defined in Recommendation T.6;
- d) the control function associated with the basic facsimile coding scheme
- as defined in Recommendation T.6.
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- Recommendation T.563 PAGE17
- 3.2.2 All classes of Group 4 apparatus shall have the following provisions for
- facsimile messages:
- a) provision for scanning the documents to be transmitted (see S 3.2.5);
- b) provision for receiving and presenting hard or soft copies of the
- documents.
- 3.2.2.1 In addition, Group 4 Class II apparatus shall have provision for
- receiving and displaying basic Teletex and mixed mode documents.
- 3.2.2.2 In addition to the requirements for Group 4 Class II apparatus,
- Class III apparatus shall have provisions for generating and transmitting basic
- Teletex and mixed mode documents.
- 3.2.3 Basic page formatting functions are as follows
- a) vertical page orientation;
- b) paper size of ISO A4;
- c) reproducible area/printable area is defined, taking into account ISO A4
- and North American paper formats and ISO standard 3535.
- 3.2.4 Terminal identification
- Each Group 4 facsimile apparatus should be equipped with a unique
- identification. Details of the identification are given in Recommendation F.184.
- 3.2.5 Scanning
- The message area should be scanned in the same direction in the
- transmitter and receiver. Viewing the message area in a vertical plane, the
- picture elements shall be processed as if the scanning direction were from left
- to right with subsequent scans adjacent to and below the previous scan.
- 3.2.6 Page size and reproducible area
- 3.2.6.1 Sometimes paper length may not be specified, because the paper end is
- detected by paper scanning.
- 3.2.6.2 The size of the guaranteed reproducible area for ISO A4 paper size is
- shown in Annex A to this Recommendation.
- 3.2.7 Group 4 facsimile transmission pel density (resolution) requirements
- The Group 4 facsimile resolution requirements and their tolerances are
- given in Table 1/T.563.
- include 563-t01eTABLE 1/T.563
- Resolution (pels/25.4 mm) Horizontal and vertical
- tolerance (%)
- 200 ┤ 200 ▒ 1
- 240 ┤ 240 ▒ 1
- 300 ┤ 300 ▒ 1
- 400 ┤ 400 ▒ 1
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- Centre line referencing will be used for paper positioning. Each page will
- be positioned on the scanner so that the centre line is in registration with the
- value: (number of pels/line)/2. (For further study.)
- Specific values for the number of pels per line, scan line length and
- nominal number of scan lines per page are given in Tables 2a/T.563 and 2b/T.563
- for all the Group 4 resolutions for ISO A4, North American Letter, ISO B4,
- ISO A3, Japanese Legal, Japanese Letter, North American Legal and North American
- Ledger paper.
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- PAGE16 Recommendation T.563
- Tableau 563-T02E à l'italienne
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- Recommendation T.563 PAGE17
- Tableau 563-T03E à l'italienne
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- PAGE16 Recommendation T.563
- Table 3/T.563 specifies the blanking procedure for all of the Group 4
- paper sizes. An equal number of pels on the left and right side of the page are
- set to white to fit the paper format. Figure 1/T.563 illustrates the blanking
- procedure for ISO A4 and North American Letter paper. The same procedure is used
- for the other paper formats.
- include 563-t04eTABLE 3/T.563
- Blanking and address reference point for different paper sizes
- Paper size Resolution Pels Pels Blanki Referen Total
- (pels/25.4 per per ng ce line
- mm) line each margin point length
- paper (pels) (mm)
- size
- line
- ISO A4 (B)
- 200 ┤ 200 1728 1654 333333 (38.1 219.46
- 240 ┤ 240 2074 1984 7 ) 219.46
- 300 ┤ 300 2592 2480 333334 (46.1 219.46
- 400 ┤ 400 3456 3308 5 ) 219.46
- 333335 (57.1
- 6 )
- 333337 (75.1
- 4 )
- North (A)
- American 200 ┤ 200 1728 1700 333331 (15.1 219.46
- Letter 240 ┤ 240 2074 2040 4 ) 219.46
- 300 ┤ 300 2592 2550 333311 (18.1 219.46
- 400 ┤ 400 3456 3400 7 ) 219.46
- 333332 (22.1
- 1 )
- 333332 (29.1
- 8 )
- ISO B4 200 ┤ 200 2048 1968 333334 (41.1 260.10
- 240 ┤ 240 2458 2362 0 ) 260.10
- 300 ┤ 300 3072 2952 333334 (49.1 260.10
- 400 ┤ 400 4096 3936 8 ) 260.10
- 333336 (61.1
- 0 )
- 333338 (81.1
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- ISO A3 200 ┤ 200 2432
- 240 ┤ 240
- 300 ┤ 300
- 400 ┤ 400
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- Recommendation T.563 PAGE17
- 2918 2338 333334 (48.1 308.86
- 3648 2806 7 ) 308.86
- 4864 3508 333315 (57.1 308.86
- 4676 6 ) 308.86
- 333337 (71.1
- 0 )
- 333339 (95.1
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- Japanese 200 ┤ 200 2048 2024 333331 (13.1 260.10
- Legal 240 ┤ 240 2458 2428 2 ) 260.10
- 300 ┤ 300 3072 3036 333311 (16.1 260.10
- 400 ┤ 400 4096 4048 5 ) 260.10
- 333331 (19.1
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- 333332 (25.1
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- Japanese 200 ┤ 200 1728 1434 333314 (148. 219.46
- Letter 240 ┤ 240 2074 1720 7 1) 219.46
- 300 ┤ 300 2592 2150 333317 (178. 219.46
- 400 ┤ 400 3456 2868 7 1) 219.46
- 333322 (222.
- 1 1)
- 333329 (295.
- 4 1)
- North 200 ┤ 200 1728 1700 333331 (15.1 219.46
- American 240 ┤ 240 2074 2040 4 ) 219.46
- Legal 300 ┤ 300 2592 2550 333311 (18.1 219.46
- 400 ┤ 400 3456 3400 7 ) 219.46
- 333332 (22.1
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- 333332 (29.1
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- North 200 ┤ 200 2432 2200 333311 (117. 308.86
- American 240 ┤ 240 2918 2640 6 1)
- Ledger 300 ┤ 300 3648 3300 333313 (140.
- 400 ┤ 400 4864 4400 9 1)
- 333317 (175.
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- 333323 (233.
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- 308.86
- 308.86
- 308.86
- Note ù The pels as defined in the blanking margin section (blanking
- margin A and B are shown in Fig.1/T.563) are equivalent to the discarded
- pels defined in Recommendation T.503.
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- Recommendation T.563 PAGE17
- The raster point in the upper left corner of an ISO page is used as a
- reference for portrait mode character printing. This raster point, termed the
- (1.1) raster reference point, is used as a starting point for determining
- character margins and positions. This is also illustrated in Figure 1/T.563.
- FIGURE 1/T.563 = 23.5 cm
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- 3.2.8 Group 4 facsimile class structure
- Table 4/T.563 shows the class structure of Group 4 facsimile apparatus.
- include 563-t05eTABLE 4/T.563
- Class structure
- Class I II III
- (See Note 1) (See Note 1) (See Note 1)
- Standard pel 200 200 and 300 200 and 300
- transmission density (See Note (See Note 2)
- (pels/25.4 mm) 2)
- Optional pel 240 and/or 240 and/or 240 and/or
- transmission density 300 400 400
- (pels/25.4 mm) and/or 400 (See Note 3) (See Note 3)
- Pel conversion Not required Yes Yes
- capability in standard
- Teletex Not required Reception Yes
- only
- Mixed mode Not required Reception Yes
- only
- Page memory Not required Yes Yes
- Use of document See Table 5/T.563
- application profile
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- Recommendation T.563 PAGE17
- Use of communication See Table 5/T.563
- application profile
- Note 1 ù Administrations may determine which class, with options,
- to be used for their national service. Standardization work has to
- continue with the goal of achieving a uniform standard.
- Note 2 ù When operating as a mixed mode terminal per Recommendation
- T.561, the pel receiving density of 240 pels per 25.4 mm is
- required.
- Note 3 ù To achieve a high service quality, the pel density of the
- scanner and printer should be greater than or equal to the
- transmission pel density. This requirement is waived for a terminal
- which has a scanner or printer with a pel density of 240 ┤ 240 pels
- per 25.4 mm and can communicate at 300 pels per 25.4 mm. In this
- case, the 240 ┤ 240 pels per 25.4 mm terminal will exceptionally
- meet the standard Class II/III requirement.
- Note 4 ù When a resolution conversion is necessary, the conversion
- is performed by the apparatus which minimizes the transmission cost
- and time. An exception would be a 240 ┤ 240 pels per 25.4 mm
- terminal transmitting to a 300 ┤ 300 pels per 25.4 mm terminal
- which is operating at the standard transmission density.
- Note 5 ù Pel conversion algorithms should aim at low impairment of
- the quality and are for further study.
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- 3.2.9 Facsimile coding schemes
- 3.2.9.1 In order to reduce the redundant information in facsimile signals, the
- basic facsimile coding scheme is defined in Recommendation T.6. This coding
- scheme is used assuming that transmission errors are corrected by control
- procedures in lower levels.
- 3.2.9.2 On an optional basis, an apparatus can use other CCITT standardized
- coding schemes defined in Recommendation T.6.
- 3.2.9.3 When the encoded bit string based on T.6 is arranged in the octet
- string of ASN.1, the first bit of encoded image should be placed in LSB of octet.
- The successive bits are placed in the direction of LSB to MSB of octet.
- 3.3 CCITT-standardized optional functions of Group 4 facsimile mode of
- operation
- 3.3.1 The possibility of using optional functions can be negotiated during a
- handshaking procedure in the communication application profile (see
- Recommendation T.521).
- 3.3.2 The optional functions are invoked by the communication application
- profile (see Recommendation T.521).
- 3.3.3 As the service develops, additions and changes to the CCITT-standardized
- optional function listed below may be needed.
- a) optional coding schemes defined in Recommendation T.6;
- b) control functions associated with optional coding schemes;
- c) grey scale images;
- d) colour images;
- e) resolution conversion algorithms.
- 3.3.4 Optional page formatting functions are as follows:
- a) page sizes of ISO B4, ISO A3, Japanese legal, Japanese letter, North
- American legal and North American ledger;
- b) other page formats are for further study.
- 3.4 Optional functions of Group 4 facsimile mode of operation for national
- standardization or private use
- The CCITT standardization includes the necessary rules and means for
- indication of, or escape into, functions specified nationally or for private use
- (see Recommendations T.62 and T.521).
- 3.5 Default conditions for Group 4 facsimile mode of operation
- In the absence of specific indications, the receiving apparatus shall
- assume the following conditions:
- a) communication (as specified in Recommendation T.521):
- ù one way (calling apparatus transmitting the facsimile message);
- ù normal document;
- b) coding scheme:
- ù basic facsimile coding scheme;
- c) image type:
- ù black and white two-level image;
- d) presentation:
- ù paper size of ISO A4;
- ù pel transmission density of 200 pels per 25.4 mm;
- ù number of picture elements along scan line of defined values in
- Table 3/T.563;
- ù blanking margin of defined values in Table 3/T.563
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- PAGE16 Recommendation T.563
- ù vertical page of orientation.
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- Recommendation T.563 PAGE17
- 4 Mixed mode capabilities
- For mixed mode of operation, requirements for Group 4 Class II and III
- terminals are specified in Recommendation T.561.
- 5 Communications
- 5.1 Storage
- Receiving storage is not required for Group 4 Class I terminals. The
- minimum storage requirement for Group 4 Class II and III is 128 K octets. This
- value is based on a pel transmission density of 300 pels per 25.4 mm for an
- ISO A4 document. However, this does not cover the worst case situation for dense
- documents. Additional memory may be required and can be negotiated.
- 5.2 Call identification
- The control procedures include the exchange of reference information prior
- to sending any document. Details of the call identification line are covered in
- Recommendation F.184.
- Printing capability of the Call Identification Line (CIL) is mandatory.
- The printing of the CIL is selected by the user.
- If printing is selected, the CIL is printed on a reserved area at either
- the top of the page or the bottom. Refer to Figure A-1/T.563. The reserved area
- is 4.23 mm (200 BMU) in height and 183 mm (8640 BMU) in width. The size of the
- basic measurement unit (BMU) is 1/1200 per 25.4 mm.
- 5.3 Interworking
- There are three document types, namely "Facsimile", "Mixed Mode" and
- "Basic Teletex". These are shown in Table 5/T.563. A terminal can transfer one or
- more documents of the same type in a single association. In the case of
- "Facsimile" or "Mixed Mode", the document type is indicated in D-INITIATE service
- primitive using the parameter "document application profile". If the document
- type is not supported by the called terminal, this will be indicated by the
- "result" parameter of the D-INITIATE service confirmation.
- include 563-t06eTABLE 5/T.563
- Document type
- Document type Group 4 Mixed Mode Basic
- facsimile Teletex
- Class of Group 4 Class I, II & Class II & III Class II &
- facsimile III III
- apparatus
- Document FDA FDA none
- Architecture (See Note
- Class 2)
- Document Rec. T.503 Rec. T.501 non Profile
- Application (See Note 1) (See Note
- Profile 2)
- Communication Rec. T.521 Rec. T.522 non Profile
- Application (See Note
- Profile 2)
- Note 1 ù When using the Group 4 facsimile mode, Document Profile
- Descriptor defined in Recommendation T.503 is not transmitted using
- session protocol data unit (SPDU).
- Note 2 ù Basic Teletex documents are transmitted outside DTAM
- application.
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- The negotiation and indication mechanisms are defined in
- Recommendation T.433. Appendix I illustrates some example of the session
- establishment phase. Table 6/T.563 specifies the interworking matrix among
- Group 4 facsimile apparatus based on negotiation result.
- include 563-t07eTABLE 6/T.563
- Interworking Matrix among Group 4 facsimile apparatus
- Class I Class II Class III
- Sender
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- Receiver
- Class I Group 4 Group 4 Group 4
- facsimile facsimile facsimile
- Class II Group 4 Group 4 Group 4
- facsimile facsimile facsimile
- Mixed Mode
- Basic
- Teletex
- Class III Group 4 Group 4 Group 4
- facsimile facsimile facsimile
- Mixed Mode
- Basic
- Teletex
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- 5.4 Communication application profile for Group 4 facsimile document
- The communication application profile to be used is BT 0, specified in
- Recommendation T.521.
- Specific parameter values to be used in the D-INITIATE and D-CAPABILITY
- service primitive are:
- ù the parameter value to represent the document application profile for
- Group 4 facsimile is defined in Recommendation T.503;
- ù the parameter value to represent the document architecture class is
- FDA, defined in Recommendation T.412.
- 6 Network-related requirements
- 6.1 Networks
- The Group 4 facsimile transport service can be provid d using a circuit-
- switched public data network (CSPDN), a packet-switched public data network
- (PSPDN), a public switched telephone network (PSTN), or an integrated services
- digital network (ISDN). In all types of network the Group 4 facsimile apparatus
- will provide automatic answering, transmission, reception and clearing.
- 6.2 Circuit-switched public data network (CSPDN)
- a) Function and procedural aspect of the interface: Recommendation X.21.
- b) With external data circuit terminating equipment (DCE) ù mechanical and
- electrical and characteristics of the interface: Recommendation X.21.
- c) Bit rates: user classes of services 4 to 7 in Recommendation X.1.
- d) Link procedure: LAPB/Recommendation X.75.
- 6.3 Packet-switched public data network (PSPDN)
- a) Function and procedural aspects of the interface: Recommendation X.25,
- levels 1, 2, 3.
- b) Duplex transmission.
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- c) Bit rates: user classes of services 8 to 11 in Recommendation X.1.
- d) Number of logical channels at a time: one or more.
- 6.4 Public switched telephone network (PSTN)
- a) Modulation/demodulation schemes are for further study.
- b) Function and procedural aspects of the interface: for further study.
- c) Link procedure: Recommendation T.71 may be applicable.
- d) Bit rate: for further study.
- e) Automatic answering: Recommendation V.25.
- 6.5 Integrated services digital network (ISDN)
- The operations and rules of Group 4 facsimile apparatus on the ISDN are
- defined in Recommendation T.90.
- 7 Indicators
- 7.1 Indicators should inform users about situations in which negative effects
- on the grade of service can be expected.
- 7.2 The following indicators are required:
- a) apparatus unable to transmit (e.g. paper jam at transmitting end);
- b) apparatus unable or soon unable to receive (e.g. paper jam or receiving
- memory nearly full);
- c) operator assistance required;
- d) message received in store.
- 8 Access to facsimile MHS
- Users of Group 4 facsimile apparatus may wish to have access to the
- services offered by the message handling system (MHS). This requires the ability
- to generate control documents (see Recommendation T.300 series). The details are
- left for further study.
- 9 Implementation of apparatus
- Although paper sizes are referred to, this does not always require
- physical paper scanner and/or printer to be implemented. Details may be defined
- by Administrations.
- If the message is not generated from a physical scanner or displayed on
- paper, then the signals appearing across the network interface shall be identical
- to those which would be generated if paper input and/or output has been
- implemented.
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- PAGE16 Recommendation T.563
- ANNEX A
- (to Recommendation T. 563)
- Guaranteed reproducible area for Group 4 apparatus
- conforming to Recommendation T.563
- FIGURE A-1/T.563 = 11,5cm
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- FIGURE A-2/T.563 = 9,5 cm
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- include 563-t08eTABLE A-1/T.563
- Horizontal losses
- Printer/Scanner a ▒ 0.5 mm
- Enlarging b ▒ 2.1 mm
- Skew c ▒ 2.6 mm
- Positioning errors d ▒ 1.5 mm
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- FIGURE A-3/T.563 = 10 cm
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- Vertical losses
- Paper insertion f 4.0 mm
- CIL printing g 4.23 mm
- Skew h ▒ 1.8 mm
- Scan line tolerance i ▒ 2.97 mm
- (see Note)
- Gripping loss j 2.0 mm
- Note ù Scanning density tolerance will reduce to 0
- mm on roll-fed machines
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- PAGE16 Recommendation T.563
- APPENDIX I
- (to Recommendation T.563)
- Communication environment establishment
- I.1 Table I.1/T.563 summarizes the selection of communication application
- profile and initial session command exchange.
- include 563-t10eTABLE I-1/T.563
- Selection of communication application profile
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- Called G-4 Class I G-4 Class II G-4 Class Basic teletex
- III
- Calling
- G4 class I T.521 T.521 T.521 T.521
- CSS/RSSP CSS/RSSP CSS/RSSP CSS/RSSP (no SUD)
- (Calling
- terminal:
- Disconnect)
- G4 class T.521 T.521 T.521 T.521
- II CSS/RSSP CSS/RSSP CSS/RSSP CSS/RSSP (no SUD)
- (Calling
- terminal:
- Disconnect)
- G4 class T.522 T.522 T.522 T.522
- III CNa)/RSSP CN/AC CN/AC CNa)/RSSP
- T.521 T.62 selection
- selection
- (fall back)
- Basic T.62 (no T.62 (no T.62 (no T.62 (no SUD)
- teletex SUD) SUD) SUD) CSS/RSSP
- CSS/RSSN CSS/RSSP CSS/RSSP
- (Calling
- terminal:
- Disconnect)
- a)When interworking with T.62 based equipment, Service Identifier
- parameter defined in T.62 is present
- in the CONNECT SPDU.
- CNCONNECTION SPDU defined in Recommendation X.225
- ACACCEPT SPDU defined in Recommendation X.225
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- I.2 Some examples of the session establishment phase are as follows:
- I.2.1 In case of Group 4 Class I terminal calling (see Figure I-1/T.563)
- FIGURE I-1/T.563 = 12,5 cm
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- I.2.2 In case of Group 4 Class II terminal calling (see Figure I-2/T.563)
- FIGURE I-2/T.563 = 12,5 cm
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- I.2.3 In case of Group 4 Class III terminal calling (see Figure I-3/T.563)
- FIGURE I-3/T.563 (Sheet 1 of 2) = 15,5 cm
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- FIGURE I-3/T.563 (Sheet 2 of 2) = 16 cm
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- I.2.4 In case of basic Teletex terminal calling (see Figure I-4/T.563)
- FIGURE I-4/T.563 = 7,5 cm
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