ETS 300 807 : 20001
Current
The latest, up-to-date edition.
INTEGRATED SERVICES DIGITAL NETWORK (ISDN); AUDIO CHARACTERISTICS OF TERMINALS DESIGNED TO SUPPORT CONFERENCE SERVICES IN THE ISDN
Hardcopy , PDF
English
Foreword
1 Scope
2 Normative References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 System description
4.1 Audio facilities
4.2 Audio encoding
4.3 Audio decoding
4.4 Relative level
5 Speech transmission characteristics
5.1 Handset mode
5.2 Headset mode
5.3 Hands-free mode (single user)
5.4 Hands-free mode (multiple users)
Annex A (normative): Test methods
A.1 General conditions for testing
A.2 Testing of transmission requirements
Annex B (informative): Test Methods for Delay measurement
B.1 Introduction
B.2 Cross-correlation method
B.3 Method based on group delay
Annex C (informative): Audio alignment and practical
installation guides
C.1 Introduction
C.2 Audio alignment and sensitivity-frequency
characteristics
C.3 Practical installation criteria
Annex D (informative): Bibliography
History
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