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Welcome to OBSAI


OBSAI aims to create an open market for cellular base stations. An open market will substantially reduce the development effort and costs that have been traditionally associated with creating new base station product ranges.

Since OBSAI was first established in September 2002, its member companies have worked together to produce a complete set of interface, hardware and test specifications. These will enable the production of base station modules to fit any base station utilising the OBSAI interface specifications.

The complete set of OBSAI interface specifications covering the areas of Transport, Clock/Control, Radio and Base Band, together with hardware connection specifications and the OBSAI test specifications are available for anyone to download from this web site.