4 Ports GSM VoIP GoIP Gateway

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1 Piece/Pieces (Min. Order)
Supply Ability:
100000 Piece/Pieces per Month
Shenzhen or Hongkong
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Ultrative or OEM
Model Number:
GSM VoIP Gateway, GSM VoIP Gateway
Voice Protocol:
H.323 and SIP
GSM 850/900/1800/1900MHZ
GSM and VoIP Channel:
G.711 (A/u law), G.729A/B, G.723.1
Packaging & Delivery
Packaging Details
Qty/CTN: 10 PCS,
N.W/CTN: 8.00 KGS,
G.W/CTN: 9.00 KGS,
Measurement: 0.036 CBM (0.5% more or less),
Carton Meas: 41(L) x 28.1(W) x 30.8 (H) cm
Delivery Time
3 Days


UTT-GoIP400 IMEI changeable
Support PPTP VPN
Can send USSD
Work withIP PBX and SIMBANK
TCP/IP V4 (IP V6 automatic adaptive)



Product Description



GoIP (GSM over IP) is a new type of VoIP gateway that allows call terminations from a VoIP network to a GSM network and vice versa. Call connections between IP networks and GSM networks are now bridged seamlessly to extend the voice communication coverage significantly. As the traditional PSTN lines are starting to disappear in developed countries and are not going to be built extensively in under-developed countries, GSM phones are getting more and more popular all over the world with lower and lower service charges, the emergence of GoIP bridges the gap between the traditional telephone networks and VoIP networks as shown in the diagram below. As a result, local and worldwide voice communications are more convenience, lower cost, and broader coverage.

You can now make a call from anywhere in the world via a VoIP network and then terminate the call via a GoIP to the local telephone network (PSTN). On the other hand, you can also make a call from the local telephone network to a GoIP (the GSM phone number) and then dial another number via a VoIP network to anywhere in the world. In these two cases, a VoIP Service provider is required for one side of the call termination. For two fixed locations, it is possible to setup GoIPs at both ends for call terminations without subscribing to a VoIP Service provider.


GoIP can also be used to achieve GSM roaming via VoIP. The idea is to route all your incoming GSM calls to a GoIP via call forward or simply insert your SIM card to a GoIP. You can then setup the GoIP to forward all incoming calls to another GSM number in the world via a VoIP service provider. The charge per call from a VoIP service provider is significantly lower than the roaming charge.


For office environment, GoIP offers a quick way to replace the traditional PSTN lines or T1/E1 lines to your IP PBX. There is no initial installation/reallocation charge and no need to wait for installation. Depending on our usage, you can add or remove lines as per your requirement. You can even configure the system so that everybody calls the same number regardless the number of lines available.



  • TCP/IP V4 (IP V6 automatic adaptive)
  • Dual VoIP protocols: ITU-T H.323 V4, IETF SIP V2.0
  • Multiple Codecs: ITU-T G.711 Alaw/ULaw, G.729A, G.729AB, G.723.1 and GSM
  • H.2250 V4
  • H.245 V7
  • H.235 (MD5, HMAC-SHA1)
  • RFC1889 real-time digital transmission protocol
  • NAT
  • STUN
  • Network Management Protocol (NMP)
  • PPPoE Dial Up
  • PPP Authentication Protocol (PAP)
  • Internet Control Message Protocol (ICMP)
  • TFTP
  • Hypertext Transfer Protocol (HTTP)
  • Dynamic Host Configuration Protocol (DHCP)
  • Domain Name System (DNS)
  • User Account Authentication (via MD5)
  • Proprietary Relay Protocol (Avoiding VoIP Blockings)


Hardware Features

  • ARM processor
  • DSP for voice signal processing
  • Two 10/100MB Ethernet ports (IEEE 802.3 standard) with status LEDs
  • Quadband GSM module (850M 900M, 1800M and 1900M)
  • External Antenna (Internal Antenna option for selected models)


Software Features

  • Built-in Web Server for device configuration
  • Built-in SIP Proxy (Simplified)
  • PPPoE Dial Up
  • Router function
  • DHCP client & Server
  • QoS (VLAN)
  • VPN (PPTP)
  • Online firmware upgrade
  • Remote Control Mechanism for remote technical support
  • Proprietary Auto Provisioning Mechanism
  • Remote SIM function
  • Short Messages (SMS) support (standalone and server based)
  • Call Management and Routing





The product comes with following accessories:

GoIP x1

Power Adapter* x1

RJ45 Cable Line x1

* 1. Optional plug type of Power Adapter: US, EU, UK, AU standards.

2. 100-240V AC ~ 50/60Hz, world wide range input voltage supported.


OEM Service

OEM, or customized orders are welcomed!!



Ultrative offers our products to be free from defects in material and workmanship for a period of 12 months from the date of shipment. This warranty does not apply to any product which has been subject to misuse, negligence, or accidental damage, or if the unit has any unauthorized modification. Satisfaction of this warranty, consistent with other provisions herein, will be limited to replacement, or repair, or modification of, or issuance of credit for the goods.

During the warranty period, we will replace new ones in free charge in case you encountered the defective units. If the defective quantity is small, we will send you news ones and NO need you return them back immediately; Else if not, we ask you ship them back (you bear the shipping fees) and we will replace you new ones (our company bear the shipping fees) as soon as we received.

Anyway, please do not worry for the defective issue because we have very strict quality controls including aging process and testing steps before the shipment.



We can ship your goods via following three ways as your preferred, and tracking number information will be provided at the same time.

  • Door-to-door express DHL, UPS or FedEx etc, it's used for sample order. We will send out the shipment generally in 3 days. It takes about 3-5 working days for global delivery.
  • Air cargo. Cost cheaper than express. It takes about 3-5 days for delivery to your local airport. MOQ G.W. 200 KGs.
  • Sea freight. Cost much cheaper than air cargo, it takes about 30 days for delivery to your local sea port. MOQ G.W. 500 KGs.


Buying Guides
  • Just let us know the model name & quantity you are interested in to place order, also advise where you want us ship the devices.
  • We will prepare you the pro forma invoice accordingly with payment details for your approval. We can accept payment by PayPal, Western Union or  bank transfer (T/T)  etc.
  • We will prepare your order and ASAP return you the shipping information & tracking number after you pay for the invoice.
  • You will receive the shipment after several days and enjoy our cooperation with the business.


Company Information

Established in 2009, Ultrative is a high-tech enterprise located in Shenzhen. We are a professional enterprise engaged in the manufacture and sale of IP voice and video products. We can supply a wide range of products to meet continuously changing market and social demands. OEM & ODM, or Customized orders are welcomed.


Our focus is on R&D, ensuring that we provide our customers with top quality and innovative products. In addition, we use stringent quality control measures to ensure the reliability of our products. With sound business credit, reasonable prices and stylish designs, excellent after-sales service, and modern manufacturing facilities, we have earned an excellent reputation among our customers across the globe.


We emphasize development, and introduce new products into the market every year. Our products sell well over 110 countries and regions markets of ITSP, Call center and other industries, and are favorably appraised by clients. We pursue the management tenet of "Quality is superior, Service is supreme, Reputation is first", and will sincerely create and share success with all clients.  We will definitely be your reliable long-term partner.


We welcome you to contact us for more information and look forward to working with you!







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