Supports 3 SIP profiles over 1 FXS port and 8 FXO ports - High performance NAT router - Lifeline support (FXS port is hard forwarded to FXO port) in case of power failure - 3-way voice conferencing per port - Automated and secure deployment options with TR069 - Supports T.38 fax for reliable fax-over-IP - Failover SIP server automatically switches to secondary server if connection to main server is lost - Strong AES encryption with per-unit security certificate