EN 62820-1-2:2017

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
4 Functional requirements
5 Performance requirements
6 Test methods
7 Documentation
Annex A (normative) - Subjective assessment of the
        IP BIS image quality
Annex B (normative) - Subjective assessment of
        echo return loss
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 62820-1-2:2017 specifies the technical requirements for the composition, functions, performance and test methods of building intercom systems using the internet protocol (IP), and it is a supplement to IEC 62820-1-1. This document is applicable to the IP building intercom systems for both residential and commercial buildings.