ÖNORM EN 301490-2 V 1.2.1:2002-04
Действует
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call transfer supplementary service for the VPN "b" service entry point - Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (incl. Diskette!!!)