... optional OEM logo, color, balance display, Pop Up window Preintall desktop SIP phone, OEM available, show logo, show balance 1. USB ... , INTERNETCALLS, NetAppel, YpoivyY, FreeCall, WebCall, VOIP RAIDER, VoipWise Onet2phone; 6. Free-hand function.Specifications1.Physical Connectors: One USB Port2. Keypad: DTMF ...