ITU I.511:1988
ITU I.511:1988 Isdn-to-isdn Layer 1 Internetwork Interface
Table of Contents
1General2Referenceconfiguration
2.1Layer1referenceconfiguration
2.2Physicalrealizationsofreferenceconfiguration
3Layer1inter-workingfunctions
3.1Mandatoryfunctions
3.2Optionalfunctions