Foreword
1 Scope
2 References
3 Abbreviations and definitions
3.1 Abbreviations
3.2 Definitions
4 General considerations
4.1 ONP Context
4.2 SDH leased line service clarifications
5 Existing standards
5.1 Standards relevant to interfaces
5.2 Standards relevant to connection characteristics
5.3 Relationships of the standards
6 Examination of the technical requirements
6.1 Connection arrangements
6.2 Timing and synchronisation
6.3 Interface characteristics
6.4 Connection characteristics
7 Conclusions on proposed standards
7.1 General conclusions
7.2 Proposed standards
7.3 Extent of the work to be done
7.4 Work program
8 Possible evolutions
8.1 Unidirectional connections
8.2 Point to multipoint connections
8.3 Reconfiguration of leased line connection
8.4 New interfaces
8.5 Alternative PDH interfaces
8.6 Support of concatenated VC-n
Annex A: List of proposed SDH leased line standards
Annex B: Proposed tables of contents and scopes
B.1 Network and terminal equipment interface
presentation ETS
B.2 Connection characteristics ETS
B.3 Terminal equipment VC-n presentation to SDH leased
lines ETS
Annex C: Proposed work program
Annex D: Alternative PDH interfaces
Annex E: Assignment of VC-n at leased line interfaces
E.1 Assignment of VC-4 in STM-4 interfaces
E.2 Assignment of VC-3 and TUG-3 in a VC-4
E.3 Assignment of VC-2 and TUG-2 in a TUG-3
E.4 Assignment of VC-12 in a TUG-2
History