I-ETS 300 245-4 : FEB 95

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Applications and functionality
  4.1 General
  4.2 Applications
  4.3 Functionality
  4.4 Operating modes
5 Physical and transmission requirements for X- and
  Y-interface
  5.1 General
  5.2 XTE-interface
  5.3 YTE-interface
  5.4 XAE-interface
  5.5 YAE-interface
  5.6 AEI-connector (X,Y)
6 ZA/ZB Interfaces Specifications
  6.1 2-Wire ZA analogue interface specification
  6.2 ZB interface specification
  6.3 Safety and protection
  6.4 AEI connector (Z)
7 Signalling protocol on the ZA/ZB interface
  7.1 Significance of the signals at the ZB interface
8 Protocol of the Y-interface
  8.1 Model of protocol specification
  8.2 Layer 1
  8.3 Layer 2
  8.4 Layer 3
Annex A (normative): Test specification
  A.1 Definitions of the aim of the test specification
  A.2 Definition of the structure of the test
      principles
  A.3 Definition of terms
  A.4 Definition of special test equipment
  A.5 General condition for testing
  A.6 Test principles
Annex B (informative): Bibliography
History

Specifies an interface for additional equipment to an ISDN telephony terminal.