Rec. ITU-T G.832 (11/1995) –  TRANSPORT OF SDH ELEMENTS ON PDH NETWORKS – FRAME AND MULTIPLEXING STRUCTURES
FOREWORD
CONTENTS
SUMMARY
1 Introduction
    1.1 Scope
    1.2 References
    1.3 Abbreviations
2 Frame structures
    2.1 Frame structure at 34 368 kbit/s
    2.1.1 General
    2.1.2 Overhead allocation
    2.2 Frame structure at 44 736 kbit/s
    2.2.1 Intermediate 500 µs frame structure
    2.2.2 Overhead allocation
    2.3 Frame structure at 97 728 kbit/s
    2.3.1 General
    2.3.2 Overhead allocation
    2.4 Frame structure at 139 264 kbit/s
    2.4.1 General
    2.4.2 Overhead allocation
3 Multiplexing structures
    3.1 Support of SDH elements in the 34 368 kbit/s frame structure
    3.1.1 Coding of payload dependent bits for Tributary Unit multiframe indication
    3.2 Support of SDH elements in the 44 736 kbit/s frame structure
    3.3 Support of SDH elements in the 97 728 kbit/s frame structure
    3.4 Support of SDH elements in the 139 264 kbit/s frame structure
    3.4.1 Multiplexing of 20 x TUG-2
    3.4.2 Multiplexing of 2 x TUG-3 and 5 x TUG-2
    3.4.3 Coding of payload dependent bits for Tributary Unit multiframe indication
Annex A – Description of the 16-byte frame and CRC-7 calculation