1、STD.ITU-T RECMN F-LbI-ENGL L99b 4b259L Ob233b2 905 m INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU FA63 (07/96) SERIES F: NON-TELEPHONE TELECOMMUNICATION SERVICES Telematic services - Public facsimile service Operational requirements of the interconnecti
2、on of facsimile store-and-forward units ITU-T Recommendation F. 163 (Previously “CCITT Recommendation”) STD-ITU-T RECMN F-Lb3-ENGL L77b 48b257L Ob233b3 841 ITU-T F-SERIES RECOMMENDATIONS NON-TELEPHONE TELECOMMUNICATION SERVICES TELEGRAPH SERVICE Operating methods for the international public telegra
3、m service The gentex network Message switching The intemational telemessage service The intemational telex service Statistics and publications on international telegraph services Scheduled and leased communication services Phototelegraph service MOBILE SERVICE F.l-F.109 F.l-F. 19 F.20-F.29 F.30-F.39
4、 F.40-F.58 F.59-F.89 F.90-F.99 F.lOO-F.104 F. 105-F.109 F.llO-F.159 Mobile services and multidestination satellite services F.llO-F.159 Teletex service F.200-F.299 Videotex service General provisions for telematic services MESSAGE HANDLING SERVICES DIRECTORY SERVICES DOCUMENT COMMUNICATION Document
5、communication Programming communication interfaces DATA TRANSMISSION SERVICES AUDIOVISUAL SERVICES ISDN SERVICES UNIVERS AL PERSONAL TELECOMMUNICATION HUMAN FACTORS F.300-F.349 F.350-F.399 F.400-F.499 F.500-F.549 F.550-F.599 F.5 50-F. 5 79 F.580-F.599 F.600-F.699 F.700-F.799 F.800-F.849 F .850-F.899
6、 F.900-F.999 13 For firther details, please refer to ITU-T List of Recommendations. STDnITU-T RECMN F-Lb3-ENGL L99b D 48b257L Ob233bli 788 D FOREWORD The IT-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (IT). The IT-T is responsible fo
7、r studying technical, operating and tariff questions 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 IT-T S
8、tudy Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the IT-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). ITU-T Recommendation F.163 was revised by ITU-T Study Group 1 (1993-1996)
9、 and was approved under the WTSC Resolution 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 ITU 1996 All rights reserved. No part of
10、 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 F.163 (07/96) i CONTENTS Page 1 Introduction 2 Scope 3 Definitions 4 Overview 5 Interconnection requ
11、irements . 5.1 General 5.2 Information transfer unit . 5.3 Transit arrangements . 6.1 Message addressing 6.3 Message identification Class of message delivery . 6.5 Message deferral . 6.6 Cover page 6 Service interworking principles . 6.2 Address list codes . 6.4 6.7 Advice of successfuiiunsuccessful
12、 message transfer 6.8 Advice of successfuiiunsuccessful message delivery . 6.9 Facsimile format conversion . 7 Quality of service . 7.6 Observations on the quality of service 7.7 Duration of service . 1 1 1 2 4 5 5 5 5 5 5 5 6 7 11 Recommendation F.163 (07/96) STD-ITU-T RECMN F.Lb3-ENGL L99b 48b259l
13、.1 Ob233bb 550 D Recommendation F.163 OPERATIONAL REQUIREMENTS OF THE INTERCONNECTION OF FACSIMILE STORE-AND-FORWARD UNITS (revised in 1996) 1 Introduction A growing number of Administrations are offering store-and-forward facsimile (COMFAX) services to their customers. For the efficient and economi
14、cal extension of these services across international boundaries, there is a need for the interconnection of the facilities used to provide these services. 2 Scope 2.1 operated and interconnected between Administrations. This Recommendation describes the general principles and operational aspects of
15、the COMFAX service when 2.2 This Recommendation should be implemented in conjunction with Recommendation F. 162 which describes the COMFAX service, and the relevant technical requirements of the T- and X-Series Recommendations. This Recommendation may also be used in connection with the provision of
16、 the bureaufax service as described in Recommendations F.170 and F.171. 3 Definitions This Recommendation uses the terms listed below. NOTE - Use of the terms “delivery”, “submission”, %ansfer”, does not imply any specific protocol implementation regarding the X.400-Series of Recommendations. 3.1 Fa
17、x SFU: A Fax SFU refers to the boundary within which the facsimile store-and-forward service is provided by one or more facsimile 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 interconn
18、ection, message transfer. 3.2 message from a Fax SFU to a recipient address. message delivery: Message delivery is defined as the transfer 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. recipien
19、t address: A recipient address is defined as the ultimate destination of a message. A recipient address 3.4 message submission: Message 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
20、successful completion of the T.30 protocol). 3.5 message from one Fax SFU (or transfer system) to another Fax SFU (or transfer system). message transfer: Message transfer is defined as the transfer of message data and responsibility for the 3.6 above. A transfer system may or may not provide end use
21、r facsimile services. transfer system: A transfer system is defined as a system which accomplishes message transfer as defined 3.7 transit facility: A transit facility is either a Fax SFU or a transfer system. Recommendation F.163 (07/96) 1 4 Overview 1 SFU country A 4.1 concerned. The interconnecti
22、on of Fax SFUs is provided on the basis of bilateral agreement between the Administrations country SF” B 1 (4.2.1) 4.2 The following two types of interconnection as illustrated in Figure 1 have been identified. 4.2.1 Interconnected store and forward is where Fax SFUs operated by two Administrations
23、are directly connected. 4.2.2 Fax SFUs or transfer systems. Transit store and forward is where the Fax SFU transfers the facsimile message between Fax SFUs via other 4.3 provided by the transfer system. Details are for further study. Interconnection between COMFAX and other services using the Messag
24、e Handling System (MHS) will be FIGURE 1F.163 COMFAX interworking scenarios 5 Interconnection requirements 5.1 General 5.1.1 transferred from the originating Fax SFU to one or more destination Fax SFUs. in the interconnection of Fax SFUs, tLe responsibility to deliver single and multi-address messag
25、es is 5.1.2 COMFAX service as defined in Recommendation F. 162. In the interconnection of Fax SFUs, it is mandatory to provide two levels of notification to support the 5.2 Information transfer unit 5.2.1 as either a user ITU or a service IT allowing easy identification of the function(s) for which
26、cooperation is required. The basic unit of the inter-SFU communication is the Information Transfer Unit (ITU). This unit is classified 5.2.1.1 facsimile message and some additional information (e.g. address). There is only one type of user ITU, which is the user message. This user message consists o
27、f the customers 2 Recommendation F.163 (07/96) STD-ITU-T RECMN F-Lb3-ENGL L77b qBbZ.571 Ob233b8 323 5.2.1.2 There are two types of service ITUs: a) Level 1 notification (LlN) - indicates the successful and/or unsuccessful transfer of responsibility for the user message to the destination SFU. An LIN
28、 conveys the information associated with the successful or unsuccessful transfer of responsibility on a per recipient basis. Table 1 lists the contents of the LIN. TABLE 1E.163 Contents of level 1 notification (LlN) Common field original message identifier recipient address original encoded informat
29、ion types converted encoded information types Successful transfer field last transfer time Unsuccessful transfer field reason code diagnostic code b) Level 2 notification (L2N) - Indicates the successful or unsuccessful delivery of the responsibility for and delivery of the user message to the recip
30、ient address. Responsibility is transferred to a user by transmission of the message to either a facsimile terminal or a storage device empowered to receive messages for a facsimile recipient. Table 2 lists the contents of the L2N. TABLE 2E.163 Contents of level 2 notification (L2N) Common field ori
31、ginal message identifier recipient address last encoded information types SFU reference Successful delivery field time of delivery to recipient address receiving terminal identifier number of pages duration of delivery Unsuccessful delivery field reason code diagnostic code last attempt time number
32、of attempts delivered Recommendation F.163 (07/96) 3 STD.ITU-T RECMN F-Lb3-ENGL L79b m 4b259L Ob233b9 2bT = ORIG 5.2.2 accordance with the X.400-Series Recommendations. Information transfer units should be transferred between Fax SFUs using Protocol Data Units (PDUs) in TRANS DEST 5.2.3 for intercon
33、nection. The use of other facsimile formats and encoded information types is subject to bilateral agreement. 5.2.4 Recommendation F.40 1. The encoded message part within the user information transfer unit should be indicated as group 3 facsimile Fax SFUs shall transfer recipient addresses using the
34、onginator/recipient (OR) address form defined in 5.3 Transit arrangements 5.3.1 5.3.2 Where messages are routed via transit facilities, the transit facility is required to support the rst level notification. 5.3.3 Where a message contains a multiple recipient address, it shall be possible for the tr
35、ansfer facility to accept responsibility for some recipient addresses and to onward transfer to one or more Fax SFUs or transfer systems the responsibility for other recipient addresses. The use of transit facilities for message transfer is subject to agreement of the service providers involved. A f
36、acsimile message may pass through a transit facility consisting of a Fax SFU or some other transfer system. 6 Service interworking principles The classification of the interworking requirements is shown in Table 3. TABLE 3E.163 Interworking requirements of service facilities Service Facility Require
37、ment Single address message Multiple address message Address list codes Message identification Class of message delivery Message deferral Cover page Advice of successful message transfer (positive LIN) Advice of unsuccessful message transfer (negative LIN) Advice of successful message delivery (posi
38、tive L2N) Advice of unsuccessful message delivery (negative L2N) Facsimile format conversion M C C M C C C C M M M CI M1 M1 NIA M M1 NIA NIA M M M1 M1 NIA M M NIA M M NIA M M M M M C Reference 6.1.1 6.1.2 6.2 6.3 6.4 6.5 6.6 6.7 6.7 6.8 6.8 6.9 M Mandatory M1 C Conditional NIA Not applicable ORIG Or
39、iginating Fax SFU TRANS Transit facility DEST Destination Fax SFU Mandatory. In the case that the transit facility does not take responsibility for any message delivery, the service facility shall be conveyed. 4 Recommendation F.163 (07/96) 6.1 Message addressing 6.1.1 Single address message in the
40、interconnection of Fax SFUs a single address message should be supported as defined in Recommendation F. 162. 6.1.2 Multiple address message in the interconnection of Fax SFUs a multiple address message should be supported as defined in Recommenda- tion F.162. 6.2 Address list codes Expansion of add
41、ress lists should be performed at the originating Fax SFU. Expansion of address lists at other Fax SFUs is for further study. 6.3 Message identification On successful submission of a message, the originating Fax SFU shall assign a globally unique identification to the message. The message identifier
42、 is used to identi the message in notifications between Fax SFUs. 6.4 Class of message delivery In the interconnection of Fax SFUs, the three classes of message delivery, urgent, normal and non-urgent, as defned in Recommendation F. 162, should be supported. 6.5 Message deferral The storage of messa
43、ges to the customer specified time for message delivery, as described in Recommendation F.162, should be carried out by the originating Fax SFU. 6.6 Cover page Cover page is described in Recommendation F.162. The customer choice of cover page shall be transferred fkom the originating Fax SFU to the
44、destination Fax SFU. 6.6.1 Support of no cover page request When no cover page is requested, no cover page shall be provided. 6.6.2 Support of the COMFAX service cover page The destination Fax SFU generates the COMFAX service cover page. The layout of the page is a local matter. Table 4 specifies wh
45、ich Fax SFU provides the COMFAX service cover page contents. 6.6.3 Use of a page description method of providing customer defined cover pages is for further study. Support of customer defined cover page 6.7 Advice of successfuihsuccessful message transfer 6.7.1 message on a per recipient basis. A L1
46、N includes information indicating the successful andor unsuccessful acceptance of responsibility for the 6.7.2 A LIN which only contains information regarding unsuccessful transfer shall be generated by either the destination Fax SFU or the transit facility as soon as it is determined that responsib
47、ility for the message on a per recipient basis cannot be accepted or transferred. Recommendation F.163 (07/96) 5 STD-ITU-T RECMN F-Lb3-ENGL L77b 9 48b257L Ob23371 718 W 6.7.3 recipient address basis. A L1N for successful transfer shall only be returned when requested. The request shall be processed
48、on a per 6.7.4 An unsuccessful message transfer is indicated by the generation of a negative L1N. (There is no requirement for the generation of a negative L2N in this case.) It shall be mandatory to return a LIN for unsuccessful transfer on a per recipient basis. TABLE 4E.163 Provision of COMFAX Se
49、rvice cover page contents Field Image field Recipient information NAME: choice of Personal name Common name Free form name ORGANIZATION ORGANIZATIONAL UNIT) PHYSICAL ADDRESS LINES FAX NETWORK ADDRESS TELEPHONE NUMBER Provided by OD (Note 1) Message information Pages Priority Submission date and time Message Reference Subject Originator information NAME: choice of Personal name Common name Free form name ORGANIZATION ORGANIZATIONAL UNIT) PHYSICAL, ADDRESS LINES FAX NETWORK ADDRESS TELEPHONE NUMBER Additional recipients I (Note 2) D O O O O O D NOTES 1 images are requ
