SIP FXO adapter gateway EIA2004QB

VoIP Gateway EIA2004QA FreeGo® EIA2004seriesis a next generation VoIP FXS gateway that is SIP based and interoperable with leading IP-PBX and Softswitch systems. It features with superb voice quality, rich telephone functionalities, easy provisioning, flexible dialing plans, PSTN failover line, and dual routed or switched network ports.The EIA2004 gateway series enables small and medium businesses to create integrated IP and PSTN telephone systems and efficiently manage communication costs. Features: 4 FXS ports(EIA2004QA), 4 FXOports(EIA2004QB), 4FXS ports 4 smart life line ports(EIA2004QC), 2FXS 2FXOports(EIA2004QD)with RJ11 2*10M/100Mbps network ports Supports voice codecs: G.711,G723.1,G.729 A/B T.38 or G.711 bypass Ideal IP enabler for analog phones, faxes and legacy PBX system VAD(voice activity detection) with CNG (comfort noise generation)and PLC (packet loss concealment), Dynamic Jitter Buffer L2/L3 QoS Web/Telnet configuration ,Auto Provisioning, PPPoE, DHCP Client/Server Support Polarity Reversal Call hold, Call waiting, Call forward, Do not disturb, Direct IP calling, Blind transfer, Attended transfer G.168 Echo Cancellation Specification: Interfaces Telephone interfaces4 FXS ports(EIA2004QA)4 FXOports(EIA2004QB)4FXS ports 4 smart life line ports(EIA2004QC)2FXS 2FXOports(EIA2004QD)Network interface2/4*10M/100MBPS auto-sensing RJ45 PortsLED indicatorsPower, Run, Network and Line LEDsVoiceFaxVoice over packet CapabilitiesG.168 with 32, 64 or 128 ms tail lengthVoice CompressionG.711,G723.1,G.729 A/BFax over IPT.38 or G.711 bypassDHCP Client/ServerNAT Router or Switched ModeTelephony FeaturesCaller ID display or block, Call waiting, Blind or attended call transfer, Call forward, Do not disturbQosDiff Serve, TOS, 802.1P/Q VLAN taggingNetwork ProtocolsTCP/UDP,RTP/RTCP,HTTP,ARP/RARP,ICMP,DNS,DHCP,NTP,TFTP ,TELNET ,PPPOE, STUNDTMF MethodRFC 2833,SIP InfoSignalingSIP(RFC 3261)over UDPProvisioningTFTP,HTTPManagementWEB browser, Telnet, Voice promptPhysicalUniversal Power SupplyOutput:12VDC, input:100-240VAC/50HzEnvironmentalOperational:32-104°For 0-40°C Storage:14-140°For -10-60°C Humidity:10%-90%Dimensions(mm)195×133×35Weight0.72kgAdditional FeaturesCaller IDBellcore Type 1 & 2, ETSI,BT,NTT, and, DTMF-based CIDPolarity ReversalYesHomologationSafetyULComplianceFCC,CE