Rec. ITU-T Q.761 (03/1993) � FUNCTIONAL DESCRIPTION OF THE ISDN USER PART OF SIGNALLING SYSTEM No. 7
FOREWORD
CONTENTS
1 General
2 Introduction to ISDN User Part (ISUP) signalling procedures
    2.1 Address signalling
    2.2 Basic procedures
    2.3 Signalling methods
    2.4 Interworking
3 Capabilities supported by the ISDN User Part
    3.1 Internationally applicable class
    3.2 National use class
4 Services assumed from the Message Transfer Part (MTP)
    4.1 General
    4.2 Description of primitives
5 End-to-end signalling
    5.1 General
    5.2 SCCP method of end-to-end signalling
    5.3 Pass-along method of end-to-end signalling
6 Future enhancements and Compatibility procedure
    6.1 Version compatibility
    6.2 Additional coding guidelines for compatibility of ISDN User Parts