... WLAN optional (support WiFi ,802.11b/g), 1*SIM slot ,PPPoE/ADSL,NAT ,VOIP Ethernet Interface:1-2 ... adjusting, Ringing tone selection, Call ID, Phone book, Missing incoming call, Incoming call, Outing call.failed outing call;HIP1860(3) support telephone tone ... and so on function;Support call waiting, call transferring, short dialing, avoid interrupt, Call conversation increment service;Default parameter ...