EN 301 061-6 : 1.1.4

INTEGRATED SVCS DIGITAL NETWK (ISDN); DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO.ONE (DSS1) PROTOCOL; GENERIC FUNCTIONAL PROTOCOL FOR THE SUPPORT OF SUPPLEMENTARY SVCS AT THE "B" SVC ENTRY POINT FOR VIRTUAL PRIVATE NETWK (VPN) APPLICATIONS; PART 6: ABSTRACT TEST SUITE (ATS) AND PARTIAL PROTOCOL IMPLEMENTATION EXTRA INFO FOR TESTING (PIXIT) PROFORMA SPECIFICATION FOR THE NETWK

European Telecommunications Standards Institute