... , full/half duplex Support 4FE+POTS+USB+WiFi Technical parameters Product ModelHG325ANetwork interface1*WAN, 4*LAN, RJ45 connectors, 10/100M auto-adaptive ... .16) Support RFC2833 and redundant RFC2833, difference rings, MD5 authentication, CID, call forward, call waiting, hot-line call, alarm clock, and ... .21) Call loss is less than 0.01%. Application chart Voip Gateway WIFI HG325A