ETSI EN 300 356-36 English Printed Edition English PDF Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 36: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for supplementary services

standard published 09/01/2001 by European Telecommunications Standards Institute