Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network; English version ETS 300185-5:1996
Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network; English version ETS 300185-5:1996
Integrated Services Digital Network (ISDN) - Conference call, add-on (CONF) supplementary service - Digital Subscriber Signalling System No. one (DSS 1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300185-1 V 1.2.4 (1998-06) as German standard)— 1 стр.