2.7 Inch Grey Scale Screen 25 Programable Softkeys 3 VoIP accounts 5-way conferencing Codecs: iLBC, G.722, G.711(A/?), GSM_FR, G.723, G.729AB, G.726-32, OPUS Dual 10/100/1000 Network PoE EHS Support for popular wireless headsets (requires the purchase of EHS30 Adapter Native VPN support to FreePBX FreePBX Phone Apps and End Point Manager license included Free of Charge for Sangoma Phones. Box Size 24,1 cm ( 9,5 Zoll ) X 22,9 cm ( 9 Zoll ) X 10,2 cm ( 4 Zoll ) and weight of 2.5 lbs.