DIN ETS 300012 : 1992 AMD 2 1996

1 Scope
2 Normative references
3 Definitions
4 Abbreviations and symbols
5 Conformance
6 Requirements
7 Additional requirements
  7.1 Limitations on power source and sink during
      transient conditions
      7.1.1 Current/time limitations for TEs
      7.1.2 Power source switch-over
      7.1.3 Other TE requirements
      7.1.4 Other power source requirements
  7.2 Current unbalance
      7.2.1 Direct current unbalance
      7.2.2 Current unbalance in a pair
  7.3 Additional requirements for an Auxiliary Power
      Supply (APS)
      7.3.1 Power available for an APS
      7.3.2 APS switch-on time
      7.3.3 APS switch-off time
      7.3.4 APS power consumption when off
      7.3.5 Dynamic behaviour of APS
  7.4 Additional requirements for NT1 restricted mode
      source for compatibility with an APS
      7.4.1 PS1 restricted mode back-off
      7.4.2 PS1 restricted mode power-up
      7.4.3 NT1 power consumption from APS normal mode
Annex A (normative): Statements, modifications and
        additional requirements to CCITT Recommendation
        1.430 (Definitions)
Annex B (normative): Additional requirements applicable
        to the (explicit) S reference point
B.1 Introduction
B.2 References
B.3 Definitions
    B.3.1 Private Network Termination (PNT)
    B.3.2 Terminal Equipment (TE)
B.4 Conformance
B.5 Requirements
B.6 Provision of power
Annex C (informative): TE design to minimise power
        disturbance
Annex D (normative): Conformance test principles to
        Interface Point
D.1 Scope and general information
    D.1.1 Scope
    D.1.2 General information
    D.1.3 Definitions and abbreviations
    D.1.4 Allocation of tests
D.2 Functional characteristic tests (Clause A.5,
    ETS 300 012)
    D.2.1 Binary organisation of frame
D.3 Interface procedure tests (Clause A.6, ETS 300 012)
    D.3.1 D-channel access control procedure
          (subclause A.6.1, ETS 300 012)
    D.3.2 Activation/deactivation (subclause A.6.2,
          ETS 300 012) 4 (subclause A.6.2, ETS 300 012)
    D.3.3 Frame alignment procedures (subclause A.6.3,
          ETS 300 012)
    D.3.4 Multiframing procedures (subclause A.6.3.3,
          ETS 300 012)
    D.3.5 Idle channel code on the B-channels (subclause
          A.6.4, ETS 300 012)
D.4 Electrical characteristics tests (Clause A.8,
    ETS 300 012)
    D.4.1 Frame rate when transmitting an INFO 1
          (subclause A.8.1, ETS 300 012)
    D.4.2 TE jitter characteristics (subclause A.8.2,
          ETS 300 012)
    D.4.3 TE transmitter output impedance (subclause
          A.8.5.1.2, ETS 300 012)
    D.4.4 Pulse shape and amplitude (subclause A.8.5.3,
          ETS 300 012)
    D.4.5 Pulse unbalance (subclause A.8.5.4,
          ETS 300 012)
    D.4.6 Voltage on other test loads (subclause A.8.5.5,
          ETS 300 012)
    D.4.7 Longitudinal conversion loss of transmitter
          output (subclause A.8.5.6.1, ETS 300 012)
    D.4.8 Receiver input characteristics (subclause
          A.8.6, ETS 300 012)
D.5 Power feeding (subclause A.9, ETS 300 012)
    D.5.1 Power source 1 phantom mode (subclause
          A.9.3.1, ETS 300 012)
    D.5.2 Power Source 2 - Optional third pair (subclause
          A.9.3.2, ETS 300 012)
Annex E (normative): Conformance test principles to
        interface point Ib
E.1 Scope and general information
    E.1.1 Scope
    E.1.2 General information
    E.1.3 Definitions and abbreviations
    E.1.4 Allocation of tests
E.2 Functional characteristic tests (Clause A.5,
    ETS 300 012)
    E.2.1 Binary organisation of frame (subclause
          A.5.4.2.2, ETS 300 012)
E.3 Interface procedure tests (Clause A.6,
    ETS 300 012)
    E.3.1 D-channel Interframe Time Fill (subclause
          A.6.1.1, ETS 300 012)
    E.3.2 D-echo channel response (subclause
          A.6.1.2, ETS 300 012)
    E.3.3 Activation/deactivation (subclause
          A.6.2, ETS 300 012)
    E.3.4 Frame alignment procedures (subclause
          A.6.3, ETS 300 012)
E.4 Electrical characteristic tests (Clause A.8,
    ETS 300 012)
    E.4.1 Bit rate (subclause A.8.1, ETS 300 012)
    E.4.2 NT jitter characteristics (subclause
          A.8.3, ETS 300 012)
    E.4.3 NT transmitter output impedance (subclause
          A.8.5.1.1, ETS 300 012)
    E.4.4 Pulse shape and amplitude (subclause A.8.5.3,
          ETS 300 012)
    E.4.5 Pulse unbalance (subclause A.8.5.4,
          ETS 300 012)
    E.4.6 Longitudinal conversion loss of transmitter
          output (subclause A.8.5.6.1, ETS 300 012)
    E.4.7 Receiver input characteristics (subclause
          A.8.6, ETS 300 012)
E.5 Power feeding (Clause A.9, ETS 300 012)
    E.5.1 Power source
    E.5.2 Minimum voltage of power source 2 (subclause
          A.9.2.3, ETS 300 012)
E.6 Auxiliary power supply
    E.6.1 Additional requirements from an APS
          (subclause 7.3, ETS 300 012)
    E.6.2 Additional requirements for NT compatible
          with APS (subclause 7.4, ETS 300 012)