The DECT suite of standards has other kinds of interoperability. In particular the DPRS (DECT Packet Radio Services) can use DECT as a wireless LAN and wireless internet access service. Range is up to 200 m indoors and 6 km using directional antenna outdoors). It has dedicated spectrum, high interference immunity, open interoperability and data speeds of around 500 kbit/s. DECT when it was new seemed to be better than Wi-Fi. The DECT networking protocol standards were particularly good at supporting fast roaming in public spaces, between hotspots operated by competing but connected providers. The first DECT product to reach the market, Olivetti's Net, was a wireless LAN, and German firms Dosch & Amand and Hoeft & Wessel built niche businesses on the supply of data transmission systems based on DECT.