EN 300 899-1 : 1.1.2

INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - SIGNALLING SYSTEM NO. 7 - INTERWORKING BETWEEN ISDN USER PART (ISUP) VERSION 2 AND DIGITAL SUBSCRIBER SIGNALLING SYSTEM NO.ONE (DSS1) - PART 1: PROTOCOL SPECIFICATION [ITU-T RECOMMENDATION Q.699, MODIFIED]

European Telecommunications Standards Institute