ETSI EN 300 359-3
ETSI EN 300 359-3
Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber (CCBS) 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 06/01/2001 by European Telecommunications Standards Institute
