The Adtran Total Access 924, 16 FXS + 8 FXO, IP Business Gateway features SIP-gateway functionality, a powerful IP router, firewall, and VPN, as well as support for a variety of analog and digital interfaces for current phone equipment, or a hybrid of an IP PBX and analog fax ...The Adtran Total Access 924, 16 FXS + 8 FXO, IP Business Gateway features SIP-gateway functionality, a powerful IP router, firewall, and VPN, as well as support for a variety of analog and digital interfaces for current phone equipment, or a hybrid of an IP PBX and analog fax, computers, or modem. Features Single T1 WAN interface Supports up to 16 FXS and 8 FXO analog interfaces for legacy equipment Single Ethernet interface for data connectivity Compatible with industry-leading softswitches and call agents Dynamic bandwidth allocation affords more efficient utilization Integral full-featured business-class IP router Stateful inspection firewall for network security Supports 802.1q Virtual LAN (VLAN) Trunking Voice quality monitoring Network Address Translation (NAT) for IP address concealmentSpecifications Number of FXS Ports: 16 Number of FXO Ports: 8 Weight: 12.8 lbs - SKU: JLRS431011