ITU-T E.775-1996 全球个人通信(UPT)服务等级(GOS)概念 UPT GRADE OF SERVICE CONCEPT Study Group 2; 9 pp

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ITU-T E.775-1996 全球个人通信(UPT)服务等级(GOS)概念 UPT GRADE OF SERVICE CONCEPT Study Group 2; 9 pp 第 1 页 ITU-T E.775-1996 全球个人通信(UPT)服务等级(GOS)概念 UPT GRADE OF SERVICE CONCEPT Study Group 2; 9 pp 第 2 页 ITU-T E.775-1996 全球个人通信(UPT)服务等级(GOS)概念 UPT GRADE OF SERVICE CONCEPT Study Group 2; 9 pp 第 3 页 ITU-T E.775-1996 全球个人通信(UPT)服务等级(GOS)概念 UPT GRADE OF SERVICE CONCEPT Study Group 2; 9 pp 第 4 页 ITU-T E.775-1996 全球个人通信(UPT)服务等级(GOS)概念 UPT GRADE OF SERVICE CONCEPT Study Group 2; 9 pp 第 5 页
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国外分类,ITU,ITU-T(电信标准分局),itu,全球,个人,通信,upt,服务,等级,gos,概念,upt,grade,of,service,concept,study,group,pp

INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU E.775 (02/96) TELEPHONE NETWORK AND ISDN QUALITY OF SERVICE, NETWORK MANAGEMENT AND TRAFFIC ENGINEERING UPT GRADE OF SERVICE CONCEPT ITU-T Recommendation E.775 (Previously “CCITT Recommendation”) FOREWORD The ITU-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 questions and issuing Recommendations 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 Recommendations 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). ITU-T Recommendation E.775 was prepared by ITU-T Study Group 2 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 19th of February 1996. ___________________ NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. © ITU 1996 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. CONTENTS Recommendation E.775 (02/96) Page 1 Scope.............................................................................................................................................................. 1 2 Related Recommendations ............................................................................................................................. 1 3 Definitions...................................................................................................................................................... 1 4 Abbreviations ................................................................................................................................................. 1 5 Introduction.................................................................................................................................................... 2 6 GOS issues for UPT ....................................................................................................................................... 6.1 IN and database architecture considerations ..................................................................................... 6.2 Access security requirements............................................................................................................ 6.3 Impact of wireless access arrangements............................................................................................ 2 2 3 3 7 GOS parameter selection and allocation principles........................................................................................ 4 8 History............................................................................................................................................................ 4 Recommendation E.775 (02/96) i SUMMARY This Recommendation outlines the general considerations for selecting UPT (Universal Personal Telecommunication) traffic GOS parameters based on the service provisioning and operational environment for UPT and the associated network considerations. ii Recommendation E.775 (02/96) Recommendation E.775 Recommendation E.775 (02/96) UPT GRADE OF SERVICE CONCEPT (Geneva, 1996) 1 Scope This Recommendation outlines the general considerations for selecting UPT traffic GOS parameters based on the service provisioning and operational environment for UPT, and the associated network considerations. The reference connection provided in Recommendation E.755 reflects some of these operational/network factors. Although it is realized that supplementary services, e.g. Call Forwarding, could have an impact on the GOS as perceived by the user, the scope of this Recommendation is initially limited to basic services. 2 Related Recommendations The following Recommendations are the ones applicable at the time of publication of this Recommendation and contain material that is either relevant to or provides background for this Recommendation. – – ITU-T Recommendation E.600 (1993), Terms and definitions of traffic engineering. – CCITT Recommendation E.720 (1988), ISDN grade of service concept. – CCITT Recommendation E.721 (1991), Network grade of service parameters and target values for circuit-swit

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