I-ETS 300 302-4 : SEP 96
Current
The latest, up-to-date edition.
INTEGRATED SERVICES DIGITAL NETWORK - (ISDN) - VIDEOTELEPHONY TELESERVICE - AUDIO ASPECTS - WIDEBAND CODING
12-01-2013
Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Requirements
4.1 General
4.2 Sensitivity - frequency response
4.3 Sending and Receiving Loudness Ratings
4.4 Volume control range
4.5 Terminal Coupling Loss
4.6 Distortion
4.7 Out of band signals
4.8 Noise
4.9 Delay
4.10 Lip synchronisation
4.11 Switching characteristics
Annex A (informative): Bibliography
History
Provides the electroacoustic characteristics for 7 kHz bandwidth loudspeaking and handsfree functions implemented in videotelephony terminals intended for use in the videotelephone teleservice in the Integrated Services Digital Network (ISDN) using Adaptive Differential Pulse Code Modulation (ADPCM) encoding according to CCITT Recommendation G.722 (see annex A).
| Committee |
TE 4
|
| DocumentType |
Standard
|
| PublisherName |
European Telecommunications Standards Institute
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| PN I-ETS 300 302-4 : 2005 | Identical |
| I-ETS 300 245-3 : FEB 95 | INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - TECHNICAL CHARACTERISTICS OF TELEPHONY TERMINALS - PULSE CODE MODULATION (PCM) A-LAW, LOUDSPEAKING AND HANDSFREE TELEPHONY |
| ETS 300 145 : 20002 | INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - AUDIOVISUAL SERVICES - VIDEOTELEPHONE SYSTEMS AND TERMINAL EQUIPMENT OPERATING ON ONE OR TWO 64 KBIT/S CHANNELS |
| I-ETS 300 245-5 : DEC 95 | INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - TECHNICAL CHARACTERISTICS OF TELEPHONY TERMINALS - WIDEBAND (7KHZ) HANDSET TELEPHONY |
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