Table of Contents

Intellectual Property Rights
Foreword
1 Scope
2 References
3 Abbreviations
4 Reference configuration
5 Functions
   5.1 SDSL Core Functions
   5.2 Stuffing and destuffing
   5.3 Transmission error detection
   5.4 Error reporting
   5.5 Failure detection
   5.6 Failure reporting
   5.7 Bit timing
   5.8 Frame alignment
   5.9 Power back-off
   5.10 Transceiver start-up control
   5.11 Loopback control and co-ordination
   5.12 Synchronization of SDSL transceivers
   5.13 Remote power feeding
   5.14 Wetting current
6 Transmission medium
   6.1 Description
   6.2 Physical characteristics of a digital local
       line (DLL)
   6.3 Electrical characteristics of a digital local
       line (DLL)
7 Frame structure and bit rates
   7.1 Introduction
   7.2 General structure of SDSL frames
   7.3 Frame structures for synchronous and
       plesiochronous transmission
   7.4 Determination of bit rates
   7.5 Tolerance of the line symbol rate
   7.6 Reference clock architecture
   7.7 Frame bit assignments
   7.8 Scrambling method
8 Operation and maintenance
   8.1 Management Reference Model
   8.2 SDSL Primitives and Failures
   8.3 Performance data storage
   8.4 SDSL embedded operations channel (eoc)
9 Electrical characteristics of a SDSL transceiver
   9.1 General
   9.2 Transmitter/Receiver impedance and return loss
   9.3 Unbalance about earth
   9.4 Signal transfer delay
10 Laboratory performance measurements
   10.1 General
   10.2 Test procedure
   10.3 Performance test procedure
   10.4 Test loops
   10.5 Impairment generator
   10.6 Measurement of noise margin
   10.7 Micro interruptions
11 Power feeding
   11.1 General
   11.2 Power feeding of the NTU
   11.3 Power feeding of the interface for
        narrowband services
   11.4 Feeding power from the LTU
   11.5 Power available at the NTU
12 Environmental requirements
   12.1 Climatic conditions
   12.2 Safety
   12.3 Overvoltage protection
   12.4 Electromagnetic compatibility
Annex A (informative): Typical characteristics of
        cables
History

Abstract

Specifies requirements for transceivers providing bi-directional symmetrical high bit rate transmission on a single metallic wire pair using the echo cancellation method.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	TM 6