Rec. ITU-T V.11 (03/1993) ELECTRICAL CHARACTERISTICS FOR BALANCED DOUBLE-CURRENT INTERCHANGE CIRCUITS OPERATING AT DATA ...
FOREWORD
CONTENTS
1 Introduction
2 Field of application
3 Symbolic representation of interchange circuit
4 Generator polarities and receiver significant levels
    4.1 Generator
    4.2 Receiver
5 Generator
    5.1 Resistance and d.c. offset voltage
    5.2 Static reference measurements
    5.3 Dynamic voltage balance and rise time measurements
6 Load
    6.1 Characteristics
    6.2 Receiver input voltage - Current measurements
    6.3 D.c. input sensitivity measurements
    6.4 Input balance test
    6.5 Terminator
7 Environmental constraints
8 Circuit protection
9 Detection of generator power-off or circuit failure
10 Measurements at the physical interchange point
    10.1 Listing of essential measurements
    10.2 Listing of optional measurements
Annex A Compatibility with other interfaces
    A.1 Compatibility of Recommendation V.10 and Recommendation V.11 interchange circuits in the same interface
    A.2 Recommendation V.11 interworking with Recommendation V.10
    A.3 Recommendation V.11 interworking with Recommendation V.35
Appendix I Cable and termination
    I.1 Cable
    I.2 Cable length
    I.3 Cable termination
Appendix II Multipoint operation
Reference