ETSI EN 302 091-2 English Printed Edition English PDF Broadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN); Digital Subscriber Signalling System No. two (DSS2), Broadband Inter-Exchange Signalling (B-QSIG), and Signalling System No. 7 (SS7); Prenegotiation; Part 2: Protocol Implementation Con

standard published 11/01/1999 by European Telecommunications Standards Institute