ETR 261-6 : 20001
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
Foreword
Introduction
1 Scope
2 References
3 Definitions, symbols and abbreviations
4 Survey of current supplementary service implementations
4.1 Fixed network results
5 Survey of users in centrex and PBX environments
5.1 Introduction
5.2 The questionnaire
5.3 Subjects
5.4 Results
5.5 Comparing usage between the two groups
5.6 Discussion and conclusions
Annex A: Public-network-based supplementary services
questionnaires
A.1 Introductory letter
A.2 The fixed network questionnaire
A.3 The mobile network questionnaire
Annex B: Centrex and PBX supplementary services questionnaire
Annex C: Supplementary service tables by network type
C.1 PSTNs
C.2 ISDN fixed networks
C.3 Analogue mobile networks - NMT, TACS, ETACS
C.4 Digital mobile networks - GSM
History
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