(ShareCast News) - AIM-listed Coms, a provider of infrastructure and smart building solutions, said its core division Redstone has won a "strategically-significant" contract to design and install an in-building cellular system serving nearly 1m square feet of office space in the city of London.The project - for UK headquarters of one of Redstone's existing clients - is worth around £750,000 and will see the business design and install technology from wireless technology provider CommScope.Coms said the deal represents the first sale of CommScope's ION-E technology in the UK.ION-E provides a number of advantages over other systems including its ability to make use of existing infrastructure and digital technology within a building, thereby reducing costs and simplifying installation.Chief executive officer Mark Braund said: "By investing in skills and talent in late-2015, Redstone has quickly become first to market in the enterprise-scale smart building space with these solutions."We expect this market to grow rapidly in importance, providing Redstone with increased demand and helping us further extend our leadership position in providing smart building solutions."In-building cellular systems allow users to use their mobile phones and mobile-connected devices where signal would otherwise be an issue.At 1525 GMT, Coms shares were up 7.9% to 1.78p.