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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