I.S. ETS 300 011:1993

Foreword
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Conformance
6 Requirements
Annex A (normative): Application of the ETS 300 011
                     for PTNX interconnections
                     (leased lines)
  A.1 Introduction
  A.2 Layer 1 modes of operation and
      interface/application models
  A.3 Special requirements
  A.4 Operation and maintenance
Annex B (normative): Application of ETS 300 011 to the
                     S reference point
  B.1 Scope
  B.2 Definitions
  B.3 Conformance
  B.4 Requirements
  B.5 Interface wiring
  B.6 Loopbacks required at S reference point
Annex C (normative): Conformance test principles for
                     the user and the network side of
                     the interface
  C.1 Scope and general information
  C.2 Electrical characteristics tests
  C.3 Functional characteristics tests
  C.4 Interface procedures tests
  C.5 Power feeding
Annex D (informative): Characteristics of loopbacks
  D.1 Introduction
  D.2 Characteristics of loopback at the network side
  D.3 Characteristics of loopbacks for primary rate
      customer installations
Annex E (informative): Bibliography

Defines requirements and test principles for the ISDN 2048 kbit/s primary rate user-network interface including the physical, electrical and functional characteristics and the information exchange with higher layers.