Single voice port that supports legacy (analog) touch-tone telephones Connects legacy telephones to IP-based networks Advanced pre-processing to optimize full-duplex voice compression High performance line-echo cancellation eliminates noise and echo Dynamic network monitoring to reduce jitter artifacts such as packet loss Clear, natural-sounding voice quality VoIP Specifications Radvision Sip stack version 3.0.4.0 Digest Authentication MD5 Record-Route Headers Hardware Characteristics Chipset: Conexant Chipset no: CX82100-41 Memory: 4MB Flash, 64MB SDRAM Voice codecs G.729A G.726 (option) G.711 A-Law G.711 U-Law Voice QoS: Diff serv STUN (Simple Traversal UDP Through NAT): RFC3489 Dual-tone multi-frequency (DTMF) DTMF tone detection and generation Mid-Call DTMF for IVR support RFC 2833 AVT tones Configurable for two sets of frequencies and single set of on/off cadence (US, UK) Line-echo cancellation G.165, G.168 compliant Echo canceller for each port 8 to128 msec configurable echo length Nonlinear echo suppression Convergence time = 250 ms ERLE = 10 to 20 dB 1 PSTN port interface (FXO) 1 VOIP port interface (FXS) LAN Protocols /Interfaces Ethernet interface Support 1 Port Ethernet Interface (10/100Mbps) which compliant with IEEE 802.3x standards 10/100 Mbps auto selection Ethernet ports support Automatic MDI/MDI-X configuration transceiver