MDS Gateways is a telecommunications company based in Dublin, Ireland. It is a designer and supplier of unified communications products and markets its products in Europe, South Africa, and the US. It specializes in Integrated Services Digital Network (ISDN) terminal adapters, ADSL modem routers, IP communications terminal equipment, voice and data exchange, and circuit switched gateways. MDS Gateways smartphone applications are available for Android and iPhone. The company's main product family is marketed under the brand name "Opera".