HTG-5000 is a 32 channels VoIP GSM Gateway (GOIP)for call termination(VoIP to GSM and GSM to VoIP). It is SIP based and compatible with Asterisk. It can enable to make 32 calles simuitaneously from IP phone to GSM network and GSM network to IP phone.  Main Functions:(1) VoIP(SIP),GSM/UMTS conversion.(2) Following me function.(3) For call termination(VoIP to GSM) and origination(VoIP to GSM).(4) Web Setting and Management.(5) IMEI changeable.(6) Supply two set extension to connect .(7) Incoming call display, and hide caller number(CLI) .Specification:Protocols:H.323(optional),SIP (RFC3261) complianceCodec:G.711u-Law ,G.711a-Law,G.723(5.3k),G.723(6.3k),G.729AGTCP/IP:IP/TCP/UDP/RTP/RTCP/CMP/ARP/RARP/SNTP DHCPFrequancy: Quan band850/900/1800/1900MhzIVR Voice configurationBuilt-in NAT/IP sharing functionBasic PBX function (Private branch exchange)Concentrated Network Management Systems(NMS)Peer-to-Peer mode (non-Gatekeeper)Line hunting32 RJ-11 FXS ports or 32 RJ-11 FXO portsE.164 (Telephone Number Plan)DTMF dialingPPPoE connectionDTMF detection/generationFSK and DTMF Caller IDRemote configuration/reset via TelnetLAN interface : two RJ-45 connector of 10/100 Base-TMicrosoft Netmeeting v3.0 compatibleSupport static IP and DHCPBuilt-in DHCP Server functionQoS by ToS (Type Of Service)SNTP (Simple Network Time Protocol)Bell signalPolarity reversalAntenna socket (FME)