Interface 4 gsm slots 2 x rj45 ethernet ports features 30 extensions video calls multiple language did(direct inward dialing number) support skype for sip call monitor / record fxo to fxs life line codec: g.711-ulaw,g.711-alaw,g.726,g.729,gsm,speex,h.261,h.263,h.263+,h.264 More
$1,800,000