Supports The Ethernet/Modem Gateway GW0210 is a next generation VoIP Gateway that provides a cost-saving solution for small business/home users on their telecommunication needs. GW0120 follows the open standard RFC-3261SIP protocol to make sure that users can easily install this device on most of the existing VoIP services. By using state-of-the-art DSP (Digital Signal Processing) technology, it delivers outstanding voice quality, which is very comparable to PSTN voice quality. With the built in LCD display, the user can easily configure for first time installation. Besides the advanced VoIP functions and easy installation, GW0210 also provides flexible call out function between PSTN calls and VoIP calls through ethernet or modem connection. This is the premier VoIP solution for dial up users.