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OpenVox GSM VoIP Gateway 20 GSM Gateway VS-GW1600-20G

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Port: Shanghai,China
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram,Different payment terms according to countries
Supply Ability: 1000 Piece/Pieces per Week
VS-GW1600-12G: VS-GW1600-12G 12 GSM Channels VoIP Gateway
Place of Origin: China
VS-GW1600-16G: VS-GW1600-16G 16 GSM Channels VoIP Gateway
Model Number: VS-GW1600-20G
Brand Name: OpenVox
asterisk-based GSM VoIP Gateway: SMBs and SOHOs Modular Design GSM Gateway
4/8/12/16/20 GSM Channels: 1 SIM card per GSM channel
Type: VoIP Gateway
VS-GW1600-4G: VS-GW1600-4G 4 GSM Channels VoIP Gateway
VS-GW1600-8G: VS-GW1600-8G 8 GSM Channels VoIP Gateway
Model: OpenVox VS-GW1600 GSM Series
SIP(RFC3261) compliance: Frequency range: GSM 850/900/1800/1900MHz 4 GSM Port Module
2 10/100M LAN Interface: Quad-Band GSM 850/900/1800/1900 MHz & Band binding
VS-GW1600-20G: VS-GW1600-20G 20 GSM Channels VoIP Gateway
Packaging Detail: Standard packing, New In Sealed Box.We also pack with wrapping film before shipping.
Shanghai Harmuber Technology Development Co., Ltd.
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US$ 20,000+
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VS-GW1600 GSM Series

Product Description

OpenVox VoxStack Series GSM Gateway is an industry 1st open source asterisk-based GSM VoIP Gateway solution for SMBs and SOHOs. With friendly GUI and unique modular design, users may easily setup their customized Gateway. Also secondary development can be completed through AMI.

There are three GSM Gateway models with VoxStack series GSM Gateway, the VS-GW1202 series, VS-GW1600 GSM series and the VS-GW2120 series. The Modular Design GSM Gateways are ranging from 4 up to 20 GSM channels, developed for interconnecting a wide selection of codecs, including G.711A, G.711U, G.729, G.722, G.723, G.726 & GSM , to the GSM cellular networks to quickly reduce telecommunication expenses and maximize cost-savings. With the unique design of the VoxStack Gateway, it can support hot-swap for both SIM cards and GSM gateway modules. Users can simply add or remove the modules for hardware expansion or exchange. Each GSM gateway module runs an independent asterisk system inside.

The VoxStack gateway designs with a Lan Switch board that provides stackability on the hardware upgrade. It supports SMS messages sending and receiving and group sending and SMS to email. The GSM Gateways use standard SIP protocol and compatible with Leading IMS/NGN platform, IPPBX and SIP servers, support most of the VoIP operating platforms such as Asterisk, Elastix, 3CX, FreeSWITCH ,Broadsoft etc.


  • Simple and convenient configuration via Web GUI
  • Support http / https / SSH
  • Basic security strategy(white/black list, security rules)
  • Optional GSM Voice Codec
  • Codecs support: G.711A, G.711U, G.729, G.723.1, G.722, G.726, GSM
  • Quad-Band GSM 850/900/1800/1900 MHz & Band binding
  • SIP(RFC3261) compliance
  • Support diverse SIP, IAX2 protocols 
  • Multipe SIP/IAX2 Registratio models: None,server, client
  • DTMF Signaling support: RFC2833, Inband, SIPINFO
  • Real Open API Protocol(based on Asterisk)
  • Support static IP and DHCP
  • Call Duration Limit
  • CLIR(Call Line Identification Restriction)
  • Call Waiting
  • Call Forwarding (unconditional, no reply, busy, not reachable)
  • SMS bulk transceiver, SMS automatically resend, Sent to Email
  • Support HTTP SMS interface
  • SMS Forwarding
  • USSD transceiver
  • SMS remotely controlling gateway
  • IMEI number automatically modify
  • PIN identification
  • Mobile number portability (MNP)
  • Flexible routing settings & unlimited routing rules
  • Support DISA
  • Extensible Automatic Callback and Speed Dial
  • Customizable IVR
  • CDR(More than 200,000 Lines CDRs Storage Locally)
  • Support configuration files backup and upload
  • Support for custom scripts, dialplans
  • Least Cost Routing(LCR),according to Time, Port, Calling Number
  • Independent System for Each Module
  • Affordable Price with Superior Performance
  • Hot-swap Design for both Sim cards and Modules
  • Compatible with sip server, such as: Asterisk, Elastix, 3CX, FreeSWITCH, etc
  • Available for OEM
  • 3-Month "No Questions Asked" Return Policy
  • One Year Warranty


Technical Specifications:
  • 4/8/12/16/20 GSM Channels
  • 1 SIM card per GSM channel
  • 2 10/100M LAN Interface
  • Storage temperature range: -20~70℃
  • Operation temperature range: 0~40℃
  • Operation humidity range: 10%~90% non-condensing
  • Power source: 1U ATX power souce,100-240V/1-2A
  • Max power: 46W
  • Dimension: 44cm × 4.5cm × 30cm
  • Weight:

Software & Platform:

  • Linux

The VS-GW1600 GSM series includes the following models:

Product  ModelSpecifications
VS-GW1600-4G4 GSM Channels VoIP Gateway
VS-GW1600-8G8 GSM Channels VoIP Gateway
VS-GW1600-12G12 GSM Channels VoIP Gateway
VS-GW1600-16G16 GSM Channels VoIP Gateway
VS-GW1600-20G20 GSM Channels VoIP Gateway
Product Picture



VS-GW1202 GSM Series.jpg









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