1 General
1.1 Scope
1.2 Definition
1.3 Objectives
1.4 Abbreviations
2
Functions
2.1 B-channel
2.2 D-channel
2.3 Bit timing
2.4 Octet timing
2.5 Frame alignment
2.6 Activation from LT or NT1
2.7 Deactivation
2.8 Power feeding
2.9 Operations and maintenance
3
Transmission medium
3.1 Description
3.2 Minimum ISDN requirements
3.3 DLL physical characteristics
3.4 DLL electrical characteristics
4
System performance
4.1 Performance requirements
4.2 Performance measurements
5
Transmission method
6
Activation/deactivation
6.1 General
6.2 Physical representation of signals
7
Operation and maintenance
7.1 Operation and maintenance functions
7.2 CL channel
7.3 Transfer mode of operation and maintenance links
8
Power feeding
8.1 General
8.2 Power feeding options
8.3 Power feeding and recovery methods
8.4 DLL resistance
8.5 Wetting current
8.6 LT aspects
8.7 Power requirements of NT1 and regenerator
8.8 Current transient limitation
9
Environmental conditions
9.1 Climatic conditions
9.2 Protection
9.3 Electromagnetic compatibility
Appendix I – Electrical characteristics of an MMS 43 transmission system
I.1 Line code
I.2 Symbol rate
I.3 Frame structure
I.4 Frame word
I.5 Frame alignment procedure
I.6 Multiframe
I.7 Frame offset at NT1
I.8 CL-channel
I.9 Scrambling
I.10 Activation/deactivation
I.11 Jitter
I.12 Transmitter output characteristics
I.13 Transmitter/receiver termination
Annex A – Extension functions and requirements for a line system with MMS 43
line code