SDH_Pocket_Guide

sdh_Pocket_Guide PDF

Contents
-Introduction 1
-What is the situation in the ªsynchronousº market? 4
-Why SDH? 6
-The synchronous digital hierarchie in terms of a layer model 10
-What are the components of a synchronous network? 12
-The STM-1 frame format 16
-How are PDH and ATM signals transported by SDH? 20
-What is the difference between SDH and SONET? 23
-Pointer procedures 26
-AU-4 contiguous concatenation 30
-AU-4 virtual concatenation 32
-Transmission at higher hierarchy levels 33
-Error and alarm monitoring 34
-Automatic protection switching 39
-Synchronization 44
-TMN in the SDH network 47
-SDH measurement tasks 50
-Sensor tests 52
--APS time measurement 53
Performance analysis 55
-Tandem Connection Monitoring 58
-Jitter measurements 59
-Overview of current ITU-T Recommendations 64
-Abbreviations 67