ITU-T N.73 PDF

Introduction

In most cases, circuits used for television transmissions are provided by the Administrations, although in some countries broadcasting organizations own all or part of the circuits within national boundaries.

The routine maintenance of circuits used for transmissions between two or more countries requires the closest cooperation between the Administrations/broadcasting organizations that provide the circuit sections.

It is recommended that routine maintenance measurements be carried out each month on permanently installed terrestrial circuits.

This Recommendation applies also for routine test transmission over leased satellite circuits for television transmissions directed to TVROs not related to an ITC.