ITU-T Rec. I.362 (1991) � B-ISDN ATM ADAPTATION LAYER (AAL) FUNCTIONAL DESCRIPTION
FOREWORD
Preamble to B-ISDN Recommendations
1 Introduction
    1.1 Scope of the Recommendation
    1.2 Objective of this Recommendation
2 Basic principles of the AAL
    2.1 Sublayering of the AAL
    2.2 Service classification for the AAL
ANNEX A � Alphabetical list of abbreviations used in this Recommendation