ETSI EN 301 145-3
ETSI EN 301 145-3
Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Teleaction service; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the End User Terminal (EUT)
standard published 11/01/1999 by European Telecommunications Standards Institute