I-ETS 300 245-3 : FEB 95
Current
The latest, up-to-date edition.
INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - TECHNICAL CHARACTERISTICS OF TELEPHONY TERMINALS - PULSE CODE MODULATION (PCM) A-LAW, LOUDSPEAKING AND HANDSFREE TELEPHONY
12-01-2013
Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Call control functions
5 Transmission aspects
5.1 General
5.2 Sensitivity frequency response
5.3 Loudness ratings
5.4 Terminal Coupling Loss (TCL)
5.5 Stability loss
5.6 Distortion
5.7 Out-of-band signals
5.8 Noise
5.9 Delay
5.10 Switching characteristics
5.11 Acoustic Echo Controllers characteristics
5.12 Articulation
Annex A (normative): Test specification
A.1 Test considerations
A.2 Transmission requirements testing
Annex B (informative): Description of the Composite
Source Signal (CSS)
B.1 General presentation of the CSS
B.2 Use of the CSS
B.3 Practical Composite Source Signal
Annex C (informative): Bibliography
History
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.