GSM VOIP gateway,4 SIM card in, function like FXO+GSM FWT. GSM+VOIP gateway. IMEI change,VPN PPTP,Encryption.Quad band,GOIP
GSM VOIP gateway
GoIP4 GSM Gateway bridges the GSM and the IP networks by enabling voice communications. It is ideal for VoIP to Local termination where a fixed telephone line (PSTN) is not available or for cellphone roaming via the a VoIP network. Significant savings on long distance charges can be realized.
| Key FeaturesOpen Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)Single or Multiple Server RegistrationsTwo 10/100 Ethernet circuits connect to the LAN and an additional deviceGSM module for making GSM callsSpeech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter bufferVLAN and QoS supportNAT Transversal and Router functionsVoice prompts, HTTP Web, Auto Provision support for configuration and updatesHighly stable embedded Linux operating system in high performance ARM 9 Processor |
| Basic FeaturesLEDs for Power, Ready, Status, WAN, PC, GSM Call forward from GSM to VoIP and VoIP to GSM Dial in mode or dial out mode onlyDial PlanPassword protection for both GSM dial in or dial outRetransmit GSM Caller ID to VoIP terminal Enhanced Features Dynamic selection of codecAdvanced jitter bufferAutomatic traversal of NAT and firewallVLAN / QosRouterEcho cancellation for SpeakerphoneComfort noise generation (CNG)Voice activity detection (VAD)Auto provisioning (requires auto provisioning server)On line firmware upgradeMulti-language support: English and ChineseSupported Standards ITU: H.323 V4, H.225, H.235, H.245, H.450RFC 1889 - RTP/RTCPRFC 2327 SDPRFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony SignalsRFC 2976 SIP INFO MethodRFC 3261 SIPRFC 3264 Offer/Answer model with SDPRFC 3515 SIP REFER MethodRFC 3842 A Message Summary and Message Waiting IndicatorRFC 3489 Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)RFC 3891 SIP Replaces HeaderRFC 3892 SIP Referred-By Mechanismdraft-ietf-sipping-cc-transfer-04 Session Initiation Protocol Call Control - TransferCodec: G.711 (A/µ law), G.729A/B, G.723.1DTMF: RFC 2833, In-band DTMF, SIP INFOPhysical and EnvironmentalOperating temperature: 10°C to 40°C (50°F to 104°F) Storage temperature: 0°C to 50°C (32°F to 122°F) Weight:500 g (1 lb) (Including AC/DC Adapter) Size:160 mm (W) x 252 mm (L) x 30 mm (H) (Width x Length x Heigth Power: 12 Vdc 2A (AC/DC adapter included) Safety: Emissions: Immunity: Other Approval: Warranty: one year GOIP4 Basic definition of the gateway GOIP4 is the GSM network and VOIP network seamless connect ed product. Fix 4 SIM card into the GOIP4 gateway, it can connect the GSM phone to the VOIP soft switch system. 2. Basic Application Condition: Standard SIP/H323 platform, GOIP4, 1 FXS gateway & 4 SIM cards Connection: Fix the 4 SIM card into the GOIP4, make the 4 GOIP-GSM connect INTERNET, then register to the soft switch. PSTN to VOIPFor example: After GOIP4 registered to the soft switch, make a call to anyone of the 4 SIM card’s number, you will hear the dial tone again,(this dial tone is made by GOIP4).Then you can dial the number you want, this way you make the call via VOIP. So it makes PSTN to VOIP come true. VOIP to PSTNFor example: there were one FXS VOIP gateway and one GOIP4 gateway registered to the same soft switch, if GOIP4’s prefix configured as 9, it’s the meaning that when the incoming call with 9 prefix, it will be send to GOIP4 gateway. If GOIP4’s prefix configured as 9T, there‘s a call to 913900580058, the GOIP4 will send 13900580058 via GSM network. So it makes VOIP to PSTN come true. 3. Other Application Condition: Standard SIP/H323 platform, GOIP4, 4 SIM cards 1. Call forward: Description: Someone is in China, but all most of his business in Malaysia. What he need to do is to set 4 Malaysia’s SIM card into our GOIP4 gateway, all the phone to this 4 Malaysia’s SIM card will be transfer to his Chinese phone, this can save a lot of international call fee. 2, Call back Description: User A uses the normal telephone or mobile phone, but he want to make discount call via VOIP, so user A just need to dial the SIM card number of GOIP, GOIP will send the dialing number to the server, when the server receive the invite signal it will alter user A to press the B number they want to dial, then the call from A to B is connected. |
4 SIM card GSM VOIP gateway
