Supplement 31 to ITU-T L-series Recommendations provides requirements for a low-cost sustainable telecommunication infrastructure for rural communications in developing countries with focus on very small aperture antennas for users. It provides details on the generic requirements set out in Recommendation ITU-T L.1700. These requirements are drawn up taking account of examples of best practices from systems already in use and the special needs of remote communities, such as cost and the lack of access to grid electricity. Broadband satellite is available in many countries at an entry cost comparable or even lower than terrestrial systems. To close the digital divide, developing countries should consider using broadband satellite. This will provide coverage to all rural and remote locations.