Published
This European Telecommunication Standard (ETS) specifies requirements and test principles for the ISDN basic rate user-network interface including the physical, electrical and functional characteristics and the information exchange with higher layers. This ensures that interface implementations in an ISDN equipment for use with ISDN basic access is portable within Europe with regard to layer 1 interface aspects and that interworking with higher layer protocols for ISDN is supported.
PUBLISHED
SSH ETS 300 012:1992
60.60
Standard published
Jul 24, 2023