Table of Contents

Intellectual Property Rights
Foreword
1 Scope
   1.1 Objectives
2 References
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 Functions
   4.1 B-channel
   4.2 D-channel
   4.3 Bit timing
   4.4 Octet timing
   4.5 Frame alignment
   4.6 Activation from LT or NT1
   4.7 Deactivation
   4.8 Power feeding
   4.9 Operations and maintenance
5 Transmission medium
   5.1 Description
   5.2 Minimum ISDN requirements
   5.3 DLL physical characteristics
   5.4 DLL characteristics
6 System performance
   6.1 Performance requirements
   6.2 Performance measurements
   6.3 Unbalance about earth
7 Transmission method
8 Activation/deactivation
   8.1 General
   8.2 Physical representation of signals
9 Operation and maintenance
   9.1 Operation and maintenance functions
   9.2 C[L] channel
   9.3 Metallic loop testing
10 Power feeding
   10.1 General
   10.2 Power feeding functions
   10.3 DLL resistance
   10.4 Wetting current
   10.5 LT aspects
   10.6 Power requirements of NT1 and regenerator
   10.7 Current transient limitation
   10.8 DC and low frequency AC termination of NT1 and REG
11 Environmental conditions
   11.1 Climatic conditions
   11.2 Safety
   11.3 Overvoltage protection
   11.4 EMC
Annex A (normative): Definition of a system using 2B1Q line code
      A.1 Line code
      A.2 Line baud rate
      A.3 Frame structure
      A.4 Frame word
      A.5 Frame alignment procedure
      A.6 Multiframe
      A.7 Frame offset between LT to NT1 and NT1 to LT frames
      A.8 C[L] channel
      A.9 Scrambling
      A.10 Start-up and control
      A.11 Jitter
      A.12 Transmitter output characteristics of NT1, REG and LT
      A.13 Transmitter/receiver termination
Annex A1 (informative): Extension functions of the system using
         2B1Q line code
      A1.1 Introduction
      A1.2 NT1 Power status bits
      A1.3 NTM bit
      A1.4 CSO bit
      A1.5 UOA bit
      A1.6 SAI bit
      A1.7 AIB
Annex A2 (informative): Discussion of EOC addressing
      A2.1 Addresses 1 through 6 (intermediate elements)
      A2.2 Action of intermediate elements
      A2.3 Action of NT
      A2.4 Summary
Annex B (normative): Definition of a system using Modified
        Monitoring State (MMS) line code
      B.1 Line code
      B.2 Symbol rate
      B.3 Frame structure
      B.4 Frame word
      B.5 Frame alignment procedure
      B.6 Multiframe
      B.7 Frame offset at NT1
      B.8 C[L] channel
      B.9 Scrambling
      B.10 Activation/deactivation
      B.11 Jitter
      B.12 Transmitter output characteristics
      B.13 Transmitter/receiver termination
Annex B1 (informative): Extension functions for a system with
         MMS43 line code
Annex C (informative): Detailed test cable characteristics
      C.1 Parameters for test cables
      C.2 Impedance plot of test loops
      C.3 Frequency response of test loops
Annex D (normative): ISDN systems requirements when coexisting
      with ADSL or VDSL
      D.1 Functional model and basic properties
      D.2 Characteristics for the ISDN-Ports
      D.3 Performance Requirements
Annex E (informative): Bibliography
History

Abstract

Describes the characteristics and parameters of a digital transmission system at the network side of the NT1 to form part of the access digital section for the Integrated Services Digital Network (ISDN) basic rate access using echo cancellation method.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TM 06