Profile: Sonus Networks specializes in telecommunication networking equipments. Our products include session border controllers, media and signaling gateways, element management systems, data stream integrator, net score, trunk group activator, VoIP activator, PSX centralized route server, ASX telephony application server & IMX multimedia application platform. Our GSX4000 low to medium density and GSX9000 high density gateways support a flexible mix of TDM & IP ports for a seamless evolution from circuit to packet networks. As network traffic evolves to all IP, the GSX gateway evolves with it, becoming a pure IP gateway through hot-swappable cards. The GSX series can even add session border control (SBC) functionality to become the sonus network border switch.