... 11b/g), 1*SIM slot ,PPPoE/ADSL,NAT ,VOIP Ethernet Interface:1-2 *10/100Base-T;Calling Control ... Protocol:H.323,MGCP,SIP;Network Protocol:TCP/IP/UDP/ARP/ICMP/HTTP/ ... talking, Volume adjusting, Ringing tone selection, Call ID, Phone book, Missing incoming call, Incoming call, Outing call.failed ... of customer purview. HIP1860(3) IP Phone SIP PHONE connect with Voip gateway