ITU R F 557:1997
ITU R F 557:1997 Availability Objective For Radio-relay Systems Over A Hypothetical Reference Circuit And A Hypothetical Reference Digital Path
Table of Contents
ANNEX1-Availabilityandreliabilityofradio-relaysystems1Introduction
2Causesofunavailability
2.1Equipment
2.2Propagation
2.3Othercauses
3Protectionswitching