ÖNORM EN 301141-7 V 1.1.1:2002-05
Действует
Integrated Services Digital Network (ISDN) - Narrowband Multi-service Delivery System (NMDS) - Part 7: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) specification for the PSTN NMDS interface Layer 3 (NTN side) (incl. Diskette!!!)