ÖNORM EN 300286-6 V 1.4.1:2003-04
Действует
Integrated Services Digital Network (ISDN) - User-to-User Signalling (UUS) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (incl. Diskette!!!)
