FTA5120 is a portable and powerful adapter with rich functions, enjoying convenient data connection and HD voice communication. With 2 FXO ports, FTA5120 can provide users with 2 PSTN calls and support high-performance NAT routing function. It can also be used as a small switch to provide internal Internet access. FTA5120 support SAS and call type identification function can identify toll calls, and with simple configuration, the internal line will no longer receive charged calls. FTA5120 is a stand-alone device, which requires no PC to make convenient and flexible Internet calls. The FTA5120 is based on SIP V2 and compatible with most service providers, which brings great convenience when deploying VoIP network. Equipped with advanced management protocols such as SNMP and TR069, which is easy to achieve unified deployment and centralized management.