ETSI EN 301 062-4 English Printed Edition English PDF Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Info

standard published 10/01/2000 by European Telecommunications Standards Institute