Rec. ITU-T M.1375 (03/1993) – MAINTENANCE OF INTERNATIONAL DATA TRANSMISSION SYSTEMS
FOREWORD
CONTENTS
ABSTRACT
KEYWORDS
1 General
1.1 Introduction
1.2 Terminology
1.3 Performance limits and objectives
1.4 Maintenance records
2 Fault reporting procedures
2.1 Control and sub-control status
2.2 Fault information exchange
3 Fault localization
4 Maintenance tests
4.1 General
4.2 Maintenance intervention tests
4.3 Returning to service tests
4.4 Loopback tests
5 In-service monitoring
References