1 Scope
2 References
3 Terms and definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 General description of GSTN transport network equipment for
interconnecting GSTN and IP networks (TIGIN)
7 Interfaces
7.1 IP bearer interfaces
7.2 GSTN (TDM) bearer interfaces
7.3 TIGIN control interfaces
7.4 TDM signalling interface
7.5 Management interface
8 TIGIN functionality
8.1 Signal processing functions
8.2 Speech quality
8.3 Switching
8.4 Clock recovery and synchronization
8.5 Security
8.6 Additional features
8.7 Management functions and management system interfaces
Appendix I – Overview of the location of TIGIN gateways in end-to-end
connections
Appendix II – Further information on performance/interworking and
synchronization
II.1 Performance/interworking
II.2 RTP timestamps
Appendix III – TIGIN equipment arrangements
Appendix IV – Mapping of E-model (ITU-T G.107) parameters from IETF RFC 3611
metrics and determining R-factor
IV.1 The E-model
IV.2 Parameters related to delay
IV.3 Parameters related to packet loss
IV.4 Parameters related to noise
IV.5 Parameters related to signal level and loudness
IV.6 Parameters related to Echo
IV.7 Calculating R, MOS-LQ and MOS-CQ values
Bibliography