ETSI EN 300 356-33
ETSI EN 300 356-33
Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 33: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for basic services
standard published 09/01/2001 by European Telecommunications Standards Institute
