42 Research, design, development and technical consultancy services, all relating to electrical and electronic equipment, telecommunications systems, cellular wireless basestations, femtocells, small cells, and microcells, modules, components, parts and fittings for cellular wireless basestations, femtocells, small cells, and microcells, computer software, computer software for telecommunications systems, computer software for cellular wireless basestations, femtocells, small cells, and microcells, computer software to enable cellular wireless basestations, femtocells, small cells, and microcells to optimise their performance in high usage enterprise and public access environments; installation, repair and maintenance of computer software, computer software for telecommunications systems, computer software for cellular wireless basestations, femtocells, small cells, and microcells, computer software to enable cellular wireless basestations, femtocells, small cells, and microcells to optimise their performance in high usage enterprise and public access environments