1、INTERNATIONAL TELECOMMUN CATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF TU F.162 (07/96) SERIES F: NON-TELEPHONE TELECOMMUNICATION SERVICES Telematic services - Public facsimile service Service and operational requirements of store-and-forward facsimile service ITU-T Recommendation F
2、.162 (Previously “CCITT Recommendation”) STD-ITU-T RECMN F-Lb2-ENGL L77b LiBb2591 0b233Li7 471 FOREWORD The IT-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (ITU). The ITU-T is responsible for studying technical, operating and tariff q
3、uestions and issuing Recommen- dations on them with a view to standardizing telecommunications 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 R
4、ecommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). IT-T Recommendation F.162 was revised by ITU-T Study Group 1 (1993-1996) and was approved under the WTSC Resolution
5、 No. 1 procedure on the 19th of July 1996. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O IT 1996 All rights reserved. No part of this publication may be reproduced or utili
6、zed in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the IT. STD*ITU-T RECMN F.Lb2-ENGL 177b = 48b257L Ob23350 173 CONTENTS 1 Introduction 2 Scope 4 Service description . 3 Definitions 5 Service facilities . 5.1 Access ma
7、nagement 5.2 Message addressing 5.3 Address list codes . 5.4 Message identification 5.5 Classes of message delivery . 5.6 Message deferral . 5.7 Cover page 5.9 Facsimile format conversion . 6 Access procedures 7 Delivery procedures . 7.1 Automatic call retry 7.2 Call records . 7.3 Recovery from inte
8、rrupted message delivery . 5.8 Customer report 8 Quality of service . 8.2 Quality of service targets 8.3 Storage capacity 8.4 Public network circuits . Annex A - Example of COMFAX service cover page . Annex B - Example of access procedures . Page 1 1 1 2 2 2 3 3 3 3 3 3 4 5 6 6 6 6 6 6 6 7 7 8 9 Rec
9、ommendation F.162 (07/96) 1 %IL STD-ITU-T RECMN F*LbZ-ENGL L79b m 48b259L Ob23352 Tbb m Recommendation F.162 SERVICE AND OPERATIONAL REQUIREMENTS OF STORE-AND-FORWARD FACSIMILE SERVICE (revised in 1992 and in 1996) 1 Introduction 1.1 The development and growth of store-and-forward equipment and the
10、potential for the international interconnection of such equipment requires a common set of facilities and operational procedures to meet the needs of users. The COMFAX service may be accessed by a variety of terminals which can employ a variety of networks for access purposes. Access to a COMFAX ser
11、vice will be predominantly from facsimile terminais connected to its associated national public networks. However, there are advantages in defining features and procedures for the service to promote and assist the provision of such services in many countries. 2 Scope 2.1 This Recommendation defines
12、the general principles and basic operational requirements of the COMFAX service provided by Administrations using computer-controlled facsimile store-and-forward units (Fax SFU). Although customer access will be, predominantly, from within the same country in which the Fax SF is situated, this Recom
13、mendation sets out the minimum service requirements that should be provided to allow extension of the service, by the interconnection with one or more other Fax SFUS, across national boundaries, for message delivery purposes. 2.2 Technical requirements of the service are covered in the relevant T- a
14、nd X-Series Recommendations. 2.3 sufficient information for charging and settlement of accounts. Tariff and accounting aspects are covered in the D-Series Recommendations. Fax SFs must record and store 2.4 The operational aspects of the interconnection of Fax SFs are covered in Recommendation F.163.
15、 2.5 The interworking between COMFAX and other services using the Message Handling System (MHS) is a requirement; details are for further study. The interworking between the COMFAX service and other UIT-T defined services is for further study. 3 Definitions This Recommendation uses the terms listed
16、below. regarding the X.400-Series Recommendations. NOTE - Use of the terms “delivery”, “submission”, “transfer”, does not imply any specific protocol implementation 3.1 Fax SFU: A Fax SF refers to the boundary within which the facsimile store-and-forward service is provided by one or more facsimile
17、store-and-forward units under the control of one Administration. A Fax SF must provide the functions of message submission, message delivery and, in the case of interconnection, message transfer. 3.2 message from a Fax SF to a recipient address. message delivery: Message delivery is defined as the t
18、ransfer of message data and responsibility for the 3.3 may designate a facsimile terminal or a storage device empowered to receive messages for a FAX recipient. recipient address: A recipient address is defined as the ultimate destination of a message. A recipient address 3.4 message submission: Mes
19、sage submission is defined as the transfer of message data and responsibility for the message from the originator to the COMFAX service (e.g. typically indicated by the successful completion of the T.30 protocol). 3.5 message from one Fax SF (or transfer system) to another Fax SF (or transfer system
20、). message transfer: Message transfer is defined as the transfer of message data and responsibility for the Recommendation F.162 (07/96) 1 STDmITU-T RECMN F-LbZ-ENGL L77b = iAb2.591 Ob23353 7T2 3.6 above. A transfer system may or may not provide end user facsimile services. transfer system: A transf
21、er system is defined as a system which accomplishes message transfer as defined 4 Service description 4.1 Customers may submit messages to the COMFAX service for delivery to one or more recipients. The service provides a range of facilities which may be used by the customer for message management pu
22、rposes. Facilities such as cover page and deferred delivery allow the customer to specify how messages are handled in their transmission from source to destination. Other facilities, such as customer reports, may provide the customer with more complete messages statistics than are generally availabl
23、e in the real-time group 3 facsimile service. The service shall accept messages submitted in group 3 facsimile format. Acceptance of messages in other formats is optional. 4.2 terminals via public networks. 4.3 Where the service is provided by means of the interconnection by two or more Administrati
24、ons interworking between Fax SFUs is as defined in Recommendation F.163. Interworking using group 3 facsimile image format is mandatory. Interworking using other formats is optional. Customers access the COMFAX service via public networks. Messages are also delivered to destination 5 Service facilit
25、ies The provision of service facilities to the facsimile customer is a local matter and may vary between Administrations. However, Administrations extending their service across international boundaries by interconnection with one or more Fax SFUs should regard the basic service facilities as mandat
26、ory or optional in accordance with Table 1. 5.1 Access management Access management is the identification and validation of the originating customer. This may be achieved by passwords where pre-registration is involved. In cases where pre-registration is not employed, the identification of the origi
27、nating customer may be achieved through the transfer of automatic number identification data from the access network to the Fax SFU. Where passwords are used, it should be possible for the customer to change the password periodically. The exact procedures for security of access should be a local mat
28、ter. TABLE 1F.162 Classification of COMFAX service facilities Service facility Access management Single address message Multiple address message Address list codes Message identification Class of message delivery Message deferral Cover page Message failure report Message delivery report Facsimile fo
29、rmat conversion M Mandatory O Optional Classification I Reference M M O O M O O O M O O 5.1 5.2.1 5.2.2 5.3 5.4 5.5 5.6 5.7 5.8.1 5.8.2 5.9 2 Recommendation F.162 (07/96) 5.2 Message addressing The method of specifying the recipient address is a local matter. 5.2.1 Single address message A single ad
30、dress message is a message with one recipient address. 5.2.2 Multiple address message A multiple address message is a message with more than one recipient address. Fax SFUs should be able to accommodate messages addressed to 5 12 recipient addresses. 5.3 Address list codes An address list code is a
31、code which is used to reference a pre-registered list of recipient addresses. A customer may use an address list code at the time of message submission. 5.4 Message identification The message reference is an identification which can be used to unambiguously identify a message relative to the message
32、 originator. When interconnection between Fax SFUS is required, the message reference must be linked to the message identifier (see 6.3E. 163). 5.5 Classes of message delivery There may be three classes of message delivery: a) urgent; b) nominal; c) non-urgent. The process by which the class of mess
33、age delivery is selected should be a local matter. Quality of Service objectives for the above classes of delivery are shown in clause 8. 5.6 Message deferral The process by which the message deferral is selected is a local matter. There may be two types of message deferrals: a) b) NOTES i 2 to a ti
34、me specified by the originator; to a time determined by the service provider. In a) the customer may choose any of the classes of delivery supported to take effect at the specified time. Deferral b) is only provided when a customer has selected the non-urgent class of delivery. 5.7 Cover page A cove
35、r page is a service provided facsimile page which is automatically added to the front of a customer provided message. The size of the cover page is the same as the first page of the message. All of the data presented on the cover page should be displayable within this size. The cover page may contai
36、n information concerning the originator, recipient, and the message. A customer may select the cover page facility on a per message basis. Recommendation F.162 (07/96) 3 - STD-ITU-T RECMN F-Lb2-ENGL 177b 48b257L b23355 775 5.7.1 Multiple address cover page Cover page generation for multiple address
37、messages is supported. A cover page request applies to all recipients of the multiple address message. The service should have the capability to provide a different cover page per recipient of a multiple address message. 5.7.2 Cover page selection A customer of the COMFAX service should have three o
38、ptions in selecting a cover page: a) no cover page; b) COMFAX service cover page; c) customer defined cover page. 5.7.3 COMFAX service cover page In this case, the COMFAX service is responsible for providing a cover page. The contents of the cover page and selection are described in the following su
39、bclause. 5.7.3.1 Cover page contents The contents of the cover page are found in Table 2. 5.7.3.2 All of the information fields listed in Table 2 which are provided in a message shall be displayed on the cover page. Fields which are required by the protocol will, therefore, always be displayed. Fiel
40、ds which are optional will be displayed if the field is present. Control and suppression of the display of fields is for further study. A suggested layout can be found in Annex A. Selection and display of contents in the COMFAX service cover page 5.7.4 Customer defined cover page The method of provi
41、ding customer defined cover pages is a local matter. 5.8 Customer report Message status information provided in level 1 and level 2 notifications described in Recommendation F.163 may be used to provide originators with customer reports, as described in the following subclauses. The presentation of
42、the content of reports and the handling of multiple address reports is a local matter. The method of delivery of the reports is a local matter, e.g. forced - facsimile or queried - delivery. 5.8.1 Message failure report The service should report to the originator the failure to deliver a message to
43、the destination address. The report to the customer may provide at least the following information: - message reference; - recipient address; - last attempt time. NOTE -Provision of time zone indication is a local matter. 5.8.2 Message delivery report The service may report to the originator the suc
44、cessful delivery of a message to the recipient address. The report to the customer may provide at least the following information: - message reference; - recipient address; - - number of pages delivered. NOTE - Provision of time zone indication is a local matter. time of delivery to recipient addres
45、s; 4 Recommendation F.162 (07/96) STD-ITU-T RECMN FmLbZ-ENGL L79b = LiAb2571 Ob2335b bOL Field TABLE 2E.162 Length image field Recipient information NAME: choice of Personal name Common name Free form name ORGANIZATION ORGANIZATIONAL UNIT(S) PHYSICAL ADDRESS LINES FAX NETWORK ADDRESS TELEPHONE NUMBE
46、R Message information Pages Priority Submission date and time Message reference Subject Maximum 8 cm (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) 3 bytes 1 byte (Note 5) (Note 4) (Note 3) Originator information NAME choice of Personal name Common name Free form name ORGANI
47、ZATION ORGANIZATIONAL UNIT( S) PHYSICAL ADDRESS LINES FAX NETWORK ADDRESS TELEPHONE NUMBER Additional recipients (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 3) (Note 6) PMPA PM (Note 1) PA PA PA PA PA PA PA PA PM PM PM PMPA (Note 2) PM PM PM PM PM PM PM PM PM PMPA PA Per add
48、ress PM Per message NOTES 1 guaranteed reproducible area of the group 3 facsimile page, in accordance with Appendix If.4. 2 each recipient. 3 4 5 provided. Translation of submission time to time zones other than the Fax SFU time zone is a local matter. 6 defined. If necessary, additional cover pages
49、 may be used to provide additional recipient information. The image field is either customer provided or service provided with a mmum length of 8 cm and fall within the The message reference shall be unique for each message, an additional three-digit part may be optionally used to signify Same value as in Recommendation F.401 or X.402. The message reference is described in 5.4. The date and time of submission of the message is to be displayed in the local time; a time zone indication should be Display of additional recipients is an item for further study
