Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Configuration and application
4.1 Configuration
4.2 Application
4.3 Modelling and relationship between the access
digital section and the ET
5 Functions
5.1 B-channel
5.2 H0-channel
5.3 H1-channel
5.4 D-channel
5.5 Bit timing
5.6 Octet timing
5.7 Frame alignment
5.8 CRC-4 procedure
5.9 M-channel
5.10 Power feeding
5.11 Operation and maintenance of the access digital
section
6 Signal transfer delay
7 Jitter
7.1 Output/input jitter at T reference point
7.2 Jitter at the V3 reference point
8 Operation and maintenance
8.1 Control facilities
8.2 Monitoring
8.3 Error performance monitoring
9 Operation and maintenance procedures
9.1 Partitioning of functions
9.2 Definitions of signals at the T reference point
9.3 Definition of signals at the V3 reference point
9.4 Definition of ET layer 1 state machine
9.5 Definition of DS state machine
Annex A (normative): System management requirements
A.1 Introduction
A.2 System management requirements
A.3 Handling of CRC error information in the ET
A.4 Definition of ET layer 1 state machine
Annex B (normative): Combined ET and LT functions
Annex C (normative): Conformance testing
Annex D (informative): Bibliography
Annex E (informative): NT1 functions with 2048 kbit/s
and Option 2
History