IEC 60835-2-9:1995

Foreword
Clause
1 General
   1.1 Scope
   1.2 Normative references
2 Analogue interface of service channels transmitted
   by analogue techniques
   2.1 Return loss
   2.2 Input deviation sensitivity
   2.3 Output deviation sensitivity
   2.4 Transmit-receive section parameters
3 Analogue interface of service channels transmitted
   by digital techniques
   3.1 Return loss
   3.2 Amplitude-frequency characteristic
   3.3 PCM coder overload point
   3.4 Idle channel noise
   3.5 Total distortion including quantizing distortion
4 Digital interface of service channels transmitted by
   digital techniques
   4.1 Return loss, terminal balance ratio
   4.2 Acceptability of the signal at the input of the
        transmit code converter
   4.3 Level and shape of the signal at the output of
        the receive code converter
   4.4 Effect of jitter
Figures
Annex A Bibliography

Deals with measurements pertaining to the service channels used in digital microwave radio-relay systems. Two basic methods are commonly used for the transmission of service channel signals (that is voice, supervisory and control signals).