ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1

pdf标准 ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1

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ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1 第 1 页 ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1 第 2 页 ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1 第 3 页 ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1 第 4 页 ITU-T F.440-1992 消息处理业务:语音消息通信业务 Message Handling Services: Voice Messaging Service Study Group 1 第 5 页
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国外分类,ITU,ITU-T(电信标准分局),itu,消息,处理,业务,语音,消息,通信,业务,message,handling,services,voice,messaging,service,study,group

INTERNATIONAL TELECOMMUNICATION UNION CCITT F.440 THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE MESSAGE HANDLING SERVICE OPERATIONS AND DEFINITION OF SERVICE MESSAGE HANDLING SERVICES: THE VOICE MESSAGING SERVICE Recommendation F.440 (08/92) FOREWORD The CCITT (the International Telegraph and Telephone Consultative Committee) is a 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 CCITT Resolution No. 2 (Melbourne, 1988). Recommendation F.440 was prepared by Study Group I and was approved under the Resolution No. 2 procedure on the 4th of August 1992. ___________________ CCITT NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication Administration and a recognized private operating agency. © ITU 1993 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 F.440 Recommendation F.440 (08/92) MESSAGE HANDLING SERVICES: THE VOICE MESSAGING SERVICE (1992) CONTENTS 1 Purpose and scope 1.1 1.2 2 General Message handling systems used in the provision of VM-service VM-service 2.1 2.2 VM-service features 2.3 Responsibility boundaries 2.4 Message store 2.5 Telephone service access unit 2.6 Use of directory 2.7 Security 2.8 3 General service requirements Distribution lists Types of body parts 3.1 Applicable body part types 3.2 Structure of voice messages 3.3 VM forwarding 4 Conversion between different encoded information types 5 Naming and addressing in general 5.1 5.2 O/R names 5.3 6 Directory names O/R addresses Operation of the service 6.1 6.2 7 General Message handling phases Quality of service 7.1 Message status 7.2 Support by Administrations 7.3 Model of delivery and notification times 7.4 Message delivery time targets Recommendation F.440 (08/92) 1 7.5 Delivery notification time targets 7.6 Receipt notifications and non-receipt notifications 7.7 Error protection 7.8 Availability of service 7.9 Minimum storage capacity 8 Tariff and accounting principles 9 Network requirements 10 User information and support 11 Use of the VM-service within CCITT defined telematic services Annex A – Abbreviations Annex B – Subscriber access and terminal requirements Annex C – VM elements of service for 1984 systems Annex D – Classification of elements of service for Voice Messaging Annex E – Definitions of elements of service specific to Voice Messaging Annex F – Classification of elements of service specific to the telephone service access unit Annex G – Secure voice messaging elements of service Annex H – Voice messaging security overview 2 Recommendation F.440 (08/92) 1 Purpose and scope 1.1 General This Recommendation specifies the general, operational and quality of service aspects of the public international Voice Messaging service. Voice Messaging services provided by Administrations belong to the group of Telematic Services defined in the F-Series Recommendations. This type of Message Handling (MH) service is an international telecommunication service offered by Administrations, enabling subscribers to send a message to one or more recipients and to receive messages via telecommunication networks using a combination of store and forward, and store and retrieve techniques. Locally provided functions, for which communication with other subscribers is not required, are not covered by CCITT Recommendations. The Voice Messaging (VM) service enables subscribers to request a variety of features to be performed during the handling and exchange of voice encoded messages. Some features are inherent in the basic VM-service. Other non-basic features may be selected by the subscriber, either on a per-message basis or for an agreed contractual period of time, if they are provided by Administrations. Intercommunication with the Interpersonal Messaging (IPM) service, may be provided as an option in the VMservice. Basic features have to be made available internationally by Administrations. Non-basic features, visible to the subscriber, are classified as either essential or additional. Essential optional features must be made availab

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