ETSI EN 300 899-3 English Printed Edition English PDF Integrated Services Digital Network (ISDN); Signalling System No.7; Interworking between ISDN User Part (ISUP) version 2 and Digital Subscriber Signalling System No. one (DSS1); Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification

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