Rec. ITU-T Q.950 (03/1993) … DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 (DSS 1) - SUPPLEMENTARY SERVICES PROTOCOLS ...
FOREWORD
CONTENTS
1 Definition
2 Description
    2.1 Structure of Q.95x-Series Recommendations
3 General principles
    3.1 Generic protocol procedures
    3.2 ASN.1 data type
    3.3 Generic syntax of operations
4 Library of operation values
    4.1 Assignment of INTEGER values for operations and errors
Appendix I … Clause headings of each Recommendation