ETSI EN 300 369-3
ETSI EN 300 369-3
Integrated Services Digital Network (ISDN); Explicit Call Transfer (ECT) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user
standard published 09/01/1999 by European Telecommunications Standards Institute
