CCITT Rec. G.703 – PHYSICAL/ELECTRICAL CHARACTERISTICS OF HIERARCHICAL DIGITAL INTERFACES
1 Interface at 64 kbit/s
    1.1 Functional requirements
    1.2 Electrical characteristics
2 Interface at 1544 kbit/s
3 Interface at 6312 kbit/s
4 Interface at 32 064 kbit/s
5 Interface at 44 736 kbit/s
6 Interface at 2048 kbit/s
    6.1 General characteristics
    6.2 Specifications at the output ports
    6.3 Specifications at the input ports
    6.4 Earthing of outer conductor or screen
7 Interface at 8448 kbit/s
    7.1 General characteristics
    7.2 Specification at the output ports
    7.3 Specifications at the input ports
    7.4 Earthing of outer conductor or screen
8 Interface at 34 368 kbit/s
    8.1 General characteristics
    8.2 Specification at the output ports
    8.3 Specifications at the input ports
    8.4 Earthing of outer conductor or screen
9 Interface at 139 264 kbit/s
    9.1 General characteristics
    9.2 Specifications at the output ports
    9.3 Specifications at the input ports
    9.4 Earthing of outer conductor or screen
10 2048 kHz synchronization interface
    10.1 General
    10.2 Specifications at the output port
    10.3 Specifications at the input ports
11 Interface at 97 728 kbit/s
ANNEX A – Definition of codes
    A.1 Definition of B3ZS (also designated HDB2) and HDB3
    A.2 Definition of B6ZS and B8ZS
ANNEX B – Specification of the overvoltage protection requirement
References