1 Introduction
2
Signalling availability
2.1 Signalling route set availability
2.2 Signalling network availability
3
Signalling dependability
3.1 General
3.2 Probability of signalling malfunction
4
Signalling delay
4.1 Functional reference points and transfer time components
4.2 Delays
4.3 Answer delay
4.4 Influence of new ISDN applications on performance
5
Signalling system limitations
5.1 Labelling potential
5.2 Number of ISDN call identities at a signalling point
References