... Cisco (CallManager), Avaya, and softswitch from Huawei, ZTE, Ericson, and etc. Investment Protection When choosing next ... forwarding, call transfer, call forking, hotline, CRBT, do not disturb, speed dialing, busy tone detection, 3 ... filter, port number changing, traffic shapingConfiguration/ManagementWeb GUIConfiguration, firmware upgrade, status monitoring, log downloadingEMSTR069/TR104/TR106, SNMPv2 ...