Standardization of VSAT communication systems in the CCIR

This paper presents an overview of the CCIR Recommendations on VSAT systems. The first part presents the activities of the CCIR Task Group 4/2 which was created in 1990 and issued five Recommendations for VSAT earth-stations. These Recommendations specify the RF characteristics of the VSAT earth-stations and their maintenance functions. The TG 4/2 finished its task in 1991. The second part of this paper presents the activities of the CCIR Task Group 4/3 which was created in 1991 for the preparation of Recommendations on the connection of VSAT networks with the public switched networks. The activities of the TG 4/3 are still going on, and the Draft Recommendations will be formalized in two more meetings. The subjects of dicussion and the expected outcomes will be briefly presented.