Features 2 FXS and 2 FXO ports - Compact, reliable stand-alone VoIP gateway with different port options. Supports simultaneous voice or fax calls on all ports. Advanced Local Call Switching - Virtual interfaces and routing tables provide industry leading flexibility in call handling programming. Local call switching, soft fallback to alternative routes. Simultaneously connects to multiple SIP services/IP PBXs. Complete SIP and T.38 support-Supports the complete range of industry standard VoIP: SIP, H.323, T.38 fax, fax and modem handling, DTMF relay. Codecs G.729, G.723, etc. Easy Management & Provisioning-Web-based management, SNMP, command line interface. Automated mass provisioning for efficient large-scale deployments. Outstanding Interoperability - Proven integration for voice and T.38 fax with 3CX®, AsteriskTM, PingTelTM and other leading IP PBX systems and soft switch vendors. Supported by SmartNodeTM Redirection Service: A free service enabling zero-touch mass deployments for Service Providers and Distributors with auto-provisioning servers.