The technology needed for a first-generation three-dimensional television (3DTV) two-channel stereoscopic system already exists, although so far there have been no announced plans for the general introduction of regular free-to-air broadcasting services. A number of broadcasting organizations nevertheless continue to carry out experiments in stereoscopic 3DTV production, while pay-television operator BSkyB has announced its intention to introduce a stereoscopic 3DTV channel in the United Kingdom during 2010. Several consumer electronics manufacturers have also announced their intention to introduce stereoscopic television receivers during 2010. An essential aim of this Report is to present a framework for a study of the various aspects of digital three-dimensional (3D) TV broadcasting systems 1 as outlined in Question ITU-R 128/6. It is intended to identify the issues that need to be addressed, and to encourage further contributions to WP 6C.