... SIM slot ,PPPoE/ADSL,NAT ,VOIP Ethernet Interface:1-2 *10/100Base-T;Calling Control Protocol:H.323,MGCP,SIP;Network Protocol:TCP ... 600mAWorking Temperature:5-45 CEnvironment Humidity:10%-90%,Non-condensationPower waste:5WDimension:(L×W×H)198mm×60mm×176mmPOE:Support Power ... , Call ID, Phone book, Missing incoming call, Incoming call, Outing call.failed outing call;HIP1860(3) support telephone tone auto ...