... *SIM slot ,PPPoE/ADSL,NAT ,VOIP Ethernet Interface:1-2 *10/100Base-T;Calling Control Protocol:H.323,MGCP,SIP;Network ... :Input AC220V,Output DC12V,600mAWorking Temperature:5-45 CEnvironment Humidity:10%-90%,Non-condensationPower waste:5WDimension:(L×W×H)198mm×60mm ... Managment of customer purview. HIP1860(3) IP Phone SIP PHONE connect with Voip gateway