4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS

4 port GSM gateway,GSM VoIP Gateway, DBL GOIP4. Support VPN & IMEI change&SMS

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Product Description

DBL 4 ports GSM VoIP Gateway, GOIP4 Hot Selling

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The GSM Fixed Terminal 4 ports Gateway GoIP4 is a 4 SIM Card Broadband Phone Gateway.GoIP4 SIM Card Broadband Phone Gateway is a new product that connect the GSM and the VOIP. To GoIP4 what is installed on the Mobile SIM Card, you can register the GSM telephone on the VoIP soft switch. SIP and H.323 agreement are built in the GoIP4 and configured flexible. Caller ID can be seen by using SIP. Flexible routing can meet the need of all kinds of call forwarding; even more special is that GoIP4 support multi-device group, it can be easily combined into arbitrary number of channels of Large Gateway Group.

Key Features:

1, Multiple GoIP4 grouping mode

2, Provide one cellular channels for IP-PBX

3, Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)

4, Single or Multiple Server Registrations

5, Two 10/100 Ethernet circuits connect to the LAN and an additional device

6, GSM module for making GSM calls

7, Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer

8, VLAN and QoS support

9, NAT Transversal and Router functions

10, Voice prompts, HTTP Web, Auto Provision support for configuration and updates

11, Highly stable embedded Linux operating system in high performance ARM 9 Processor

Basic Features:

1, LEDs for Power, Ready, Status, WAN, PC, GSM

2, Call forward from GSM to VoIP and VoIP to GSM

3, Dial in mode or dial out mode only

4, Dial Plan

5, Password protection for both GSM dial in or dial out

6, Retransmit GSM Caller ID to VoIP terminal

Enhanced Features:

1, Dynamic selection of codec

2, Advanced jitter buffer

3, Automatic traversal of NAT and firewall

4, VLAN / Qos

5, Router

6, Echo cancellation for Speakerphone

7, Comfort noise generation (CNG)

8, Voice activity detection (VAD)

9, Auto provisioning (requires auto provisioning server)

10, On line firmware upgrade

11, Multi-language support: English and Chinese

Hardware Specifications:

1, Processor: ARM9E 133MHz

2, DSP: VPDSP101 95MHz

3, Memory: RAM 8MB/ Flash 4MB

4, GSM Module: Type: 850MHz, 900MHz, 1800MHz, 1900MHz

5, Power: Input AC100V ~ 240V, output 12 Vdc 2000 mA

6, Power consumption: 12W maximum

7, Operating temperature: 10°C to 40°C (32°F to 104°F)

8, Storage temperature: 0°C to 50°C (32°F to 122°F)

9, Working Humidity: 40% ~ 90% Not congealed

10, Weight: 830 g (1 lb) (Including AC/DC Adapter)

11, Warranty: one year

How GOIP4 make you able to get free internation calling?

Peer to peer: it is a new function that you can use our voip without platform,what is more,it is free roaming for international call. you pay only the local call.

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Item Specifics

Brand Name: 
 VoIP Gateway
Model Number: 
 G.711 (A/μ law),G.729A/B, G.723.1
IMEI change: 


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

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We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

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Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

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For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

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For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

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