USB phones and adapters work with the following service providers:
Skype, Globe7, VoipBuster, VoipStunt, VoipDiscount, Internetcalls, X-Lite/X-Ten/Eyebeam, MSN Messenger, Yahoo Messenger, VoipCheap, FreeCall, NetAppel, SparVoip, Google Talk , Net2Phone , Gizmo, SJPhone, Stanaphone, Sipgate , DialPad, Firefly, Nortel IP i2050, Voiceserve, Vonage, Ubiphone.

VOIP GATEWAY,VOIP BOX,IP PHONE, IP BOX, VOIP TO RJ11 Adapter.