Product Name: GSM CDMA VoIP SIP Gateway with 32 Channels, SMS Server for Bulk SMS Model NO.: DWG2000G-32G Color: Black Channels: 1/4/8/16/32 Frequency: Quad-Band 850/900/1800/1900MHz Potocol: SIP/MGCP Network Interface: 1wan, 3LAN, RJ45 Voice Codec: G.711.G.723.1.G.729A/B Call Features: Vad,CNG, PLC and Dynamic Jitter Buffer SMS API: Open SMS API Trademark: Dinstar Transport Package: Carton Specification: CE, FCC, Origin: China HS Code: 85176239 Product Description Network FeaturesSIM card slot: 32 GSM channelsEthernet Interface: 1 LAN*10/100M base-TxRJ45Manage Interface: 1 Console RFC2833Static IP,PPPoE, DHCPNetwork Protocol Support:IP,TCP, UDP,TFTP, FTP, RTP, RTCP, ARP,RARP,ICMP Ping, NTP, SNTP, Http, DNSNAT traversal: Static NAT, STUNStatic/dynamic ARP requestUp to 32 routingVLANSIP CharacteristicsBy port registrationBy device registration(share account)Support IP trunk and IP trunk groupTwo 183 modeResponse code switchAll ports busy, redirected to other devicePhysical propertiesPower: 220 VACPower consumption:80WTemperature(operation): 0 °C ~ 45 °C (storage): -20 °C ~80 °COperation Humidity: 10%-90%no condensationDimension(w/D/H):440*330*66mmWeight: 6.4kg