1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF TU T.563 Amendment 2 (1 0/97) SERIES T: TERMINALS FOR TELEMATIC SERVICES Terminal characteristics for Group 4 facsimile apparatus Amendment 2: Annex C - T.30 frames for G4 facsimile ITU-T Recommendation T.563 - A
2、mendment 2 (Previously CCITT Recommendation) STD-ITU-T RECMN T-563 AND 2-ENGL 3997 4862593 Ob43053 383 I ITU-T T-SERZES RECOMMENDATIONS TERMINALS FOR TELEMATIC SERVICES For further details, please refer to ITU-T List of Recommendations. STD-ITU-T RECMN T-5b3 AMD 2-ENGL 1997 4862593 Ob43052 OLT ITU-T
3、 Recommendation T.563 TERMINAL CHARACTERISTICS FOR GROUP 4 FACSIMILE APPARATUS AMENDMENT 2 ANNEX C T.30 frames for G4 facsimile Summary This Amendment defines the introduction of new optional signals into G4 Facsimile. These signals are SUB (Subaddress), SEP (Selective Polling), PWD (Password), SID
4、(Sender ID), PSA (Polled Subaddress) and FNV (Field Not Valid) defined in Recommendation T.30 as signals of G3 Facsimile. For introducing these signals, similar optional service as G3 Facsimile can be used on G4 Facsimile in common. Source Amendment 2 to ITU-T Recommendation T.563, was prepared by I
5、TU-T Study Group 8 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the 16th of October 1997. Recommendation T.563lAmd.2 (10/97) 1 STDSITU-T RECMN Te563 AMD 2-ENGL 1997 4Bb259L 0643053 T5b FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized
6、 Agency in the field of telecommuni- cations. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications
7、on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is
8、covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness
9、to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no pos
10、ition concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property,
11、protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1998 All rights reserved. No part of this publication may be
12、 reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. ii Recommendation T.563lAmd.2 (10/97) CONTENTS C.l Scope C.2 References C.3 Tenns and definitions . C.4 Abbreviations C.5 New frame mechani
13、sms Recommendation T.563/Amd.2 (10/97) Page 1 1 1 2 2 . 111 STD-ITU-T RECMN To563 AND 2-ENGL 1997 I 4862591 Ob43055 829 Introduction and background This Annex describes definitions of the following new six signals. SUB, SEP and PWD have the same meaning which have been defined in Recommendation T.30
14、 as signals of G3 Facsimile; and SID, PSA and FNV are the same which have been decided to introduce into G3 Facsimile at the February 1997 meeting of Study Group 8. iv Recommendation T.563lAmd.2 (10197) STD-ITU-T RECMN T.5b3 AMD 2-ENGL 1997 4Bb259L Ob43056 7b5 Recommendation T.563 TERMINAL CHARACTER
15、ISTICS FOR GROUP 4 FACSIMILE APPARATUS AMENDMENT 2 ANNEX C T.30 frames for G4 facsimile (Geneva, I99 7) Add Annex C as follows: C.l Scope This Annex shows an algorithm of introduction of T.30 frames into G4 facsimile protocol. C.2 References - ITU-T Recommendation T.30 (1 996), Procedures for docume
16、nt facsimile transmission in the general switched telephone network. See subclause 5.3.6: “Informationjeld“. - ITU-T Recommendation T.62 (1993), Controlprocedures for teletex and Group 4 facsimile services. - ITU-T Recommendation T.62 bis (1993), Control procedures for teletex and Group 4 facsimile
17、services based on Recommendations X215 andX225. C.3 Terms and definitions This annex defines the following terms: C.3.1 used to provide additional routing information in the facsimile procedure. C.3.2 a) b) a specific document number. Subaddress (SUB): This optional signal indicates a subaddress in
18、the called subscribers domain. It may be Selective Polling (SEP): This optional signal indicates: a subaddress for the polling mode; or C.3.3 additional security to the facsimile procedure. Password (PWD): This optional signal indicates a password for the polling mode. It may be used to provide C.3.
19、4 Polled Subaddress (PSA): This optional signal indicates a subaddress for polling. C.3.5 Sender Identification (SID): This optional signal indicates the sender identity. C.3.6 any combination of these) is invalid or not accepted. Field Not Valid (FNV): This optional signal indicates that the last r
20、eceived SUB, SEP, PWD, PSA or SID (or Recommendation T.563/Amd.2 (10/97) 1 STD-ITU-T RECMN T.563 AND 2-ENGL 1997 m 4862571 Ob43057 bT1 m 1100 0001 1100 0010 11000011 1100 o100 C.4 Abbreviations This Annex uses the following abbreviations: CDCL Command Document Capability List DAP Document Applicatio
21、n Profile PIX Pixel RDCLP SUD Session User Data Response Document Capability List Positive SUB-TAG SEP-TAG PWDTAG PSA-TAG C.5 New frame mechanisms 1100 O101 1100 o1 10 C.5.1 When G4 facsimile expects to send frames defined in Table C. 1R.563, similar to those in T.30, it should negotiate with DAP “0
22、209H“. DAP “02H“ means G4 facsimile and DAP “09H“, which will be defined newly, means T.30 frame. Negotiation of sending T.30 frame SIDTAG FNV-TAG (Note 1) Table C.lR.563 -List of tag for T.30 frame features Session User Data PGI (OxC1) Name of tag (Note 2) I Code of tag I SUD Length SUB-TAG Length
23、SUB code SID-TAG Length SID code (46) (OXC1) (20) (OxC5) (20) 1 Session User Data PGI (OXC1) SUD Length SEP-TAG Length SEP code PWD-TAG Length PWD code (46) (OxC2) (20) (OxC3) (20) NOTE 1 -This tag can be used only in RDCLP. NOTE 2 - Other additional tags may be added in accordance with T.30 in the
24、future. C.5.2 The above defined DAP “09H“ means that the following frame features of T.30 may be set in CDCL. Two-byte-length area should follow a TAG code and indicate the length of the following code. This length can indicate the range of 0-65535 bytes. Two examples of SUD format will be shown as
25、follows. Format of SUD in CDCL Example 2: SEP + PWD 2 Recommendation T.563lAmd.2 (10/97) STDmITU-T RECMN T.563 AND 2-ENGL 1997 = 4862593 Ob43058 538 Session User Data SUD Length SUB-TAG Length SID-TAG (6) PGI (OXC1) (OXC1) (0x0000) (OxCS) Length (0x0000) Example 2 This example shows SUD format which
26、 is notified with FNV-TAG of RDCLP that received “SUB“ in CDCL is invalid. Session User DATA SUD Length FNV-TAG Length PGI Reason Octets (OXC1) 1 (4) C.5.4 The available code of frames complies with Table 3m.30 and its length is fixed 20 digits long. The application of T.33 (Facsimile routing utiliz
27、ing the subaddress) is for further study. Example A format example of SUB with “123“ is shown as follows. Contents of T.30 frame in G4 protocol c1 : SESSION USER DATA 17 : Length of SUD c1 : SUB-TAG (OxC6) (0x0001) (0x04) O0 14 I Length of SUB (2 bytes) 20 : Space code : total 17 Space codes 20 : Sp
28、ace code 31 32 33 : “1“ in the most significant digit of the figure “123“ : “2“ in the second digit of the figure “123“ : “3“ in the least significant digit of the figure “123“ C.5.5 Protocol example Typical signal flows are shown as follows when sending SUB/SEP/PWD/SID. Recommendation T.563/Amd.2 (
29、10/97) 3 C.5.5.1 When SUB + SID are acceptable: Calling side Called side PIX C.5.5.2 When SEP + PWD are acceptable: C.5.5.3 When only SID is not acceptable in reply to SUB + SID: 4 Recommendation T.563/Amd.2 (10/97) Series A Series B Series C Series D Series E Series F Series G Series H Series I Ser
30、ies J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression: definitions, symbols, classification General telecommunication statistics Genera
31、l tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital network Transmission of televisio
32、n, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, telephone circuits, telegraphy, facsimile and leased circuits Maint
33、enance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communication Programming languages
