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GoIP is a series of GSM-gateways[1] and SIM-bank produced by Hybertone and DBL technology company. It serves to establish direct connection between GSM network and VoIP

Usage concept

Sim-card is put into GSM-gateways (or SIM-bank connected to GSM-gateway) in order to register it in GSM network, at the same time the gateway is connected with VoIP through program switch. Accordingly the traffic can be converted in and out between GSM and VoIP channels. SIP and H.323 protocols are used for media traffic termination. GoIP equipment is compatible with all main IP PBX: Asterisk, Mera, Oktell, 3CX etc. Goip is distributed in Brazil by

In compare with PSTN, GSM-gateways provides drastic economy by amending the infrastructure and lowering the expenditures on technical support.

GoIP includes an integral support of SIP and H.323 protocols with flexible settings. Duplex authentification of password and trust-list back-up will significantly decrease the risk of getting huge bills for telecommunication, besides it maintains an adaptable system of call transfer. Precisely, GoIP gateway supports the groups of several devices, with flexible settings of large GSM-gateways groups with different numbers of channels.

There are several models of GoIP GSM-gateways

  • 1 Port GSM VoIP Gateway,
  • 4 Port GSM VoIP Gateway,
  • 8 Port GSM VoIP Gateway,
  • 16 Port GSM VoIP Gateway,
  • 32 Port GSM VoIP Gateway.

Appliance of GoIP gateways: They are vastly usable by system integrators, TCP, call-centers, large and little companies and domestic users of VoIP as well.

VoIP-GSM gateways produced on GoIP platform help to accomplish the following:

Adding the mobile lines in the existing telephone system (GoIP provides GSM network between telephone systems and IP PBX, and ensures the fast connection to PSTN where usual telephone lines are unavailable) Organization of outbound call-centers Call transfer from GSM into SIP and backward (inbound and outbound calls between GSM and VoIP)

Determination of SIM-bank

SIM-bank is a SIM-card controller that provides remote control over VoIP GSM-gateways and allows to simplify and automatize many procedures likewise:

- fast connection of SIM-cards to the gateway, rapid exchange of SIM-cards via Internet and their prearranged synchronous replacement.

The cooperative use of GoIP gateways and GoIP SIM-bank permits to manage the unmanned devices and reduces the work pressure in SIM-cards operations, for example: SIM-cards replacement and replenishment.

The remote access advantages for SIM-cards

central management of SIM-cards, their dynamic allocation, no need to change or reinsert the SIM-card in the device, rapid replacement of SIM-cards with no breakdowns in service.

For instance, the remote GoIP gateway will no longer require the replacement of SIM-cards in the device or their reinsertion. One can manage the group of GoIP gateways remotely, effectively and with minimal loss with assistance of SIM-bank. The main pros of SIM-bank appliance include 1) the replacement of SIM-cards in gateways channels that are territorially remote from the very SIM-bank and other gateways in order to transfer the SIM-cards between the base stations of GSM operator and 2) autonomous work that supports from 32 to 128 channels for SIM-cards independent connections.

Software settings

GoIP equipment has a wide spectrum of functions but it's hard to set the work properly. The online service of [2] offers a complete solution for flexible management of GoIP equipment.

VoIP-GSM gateway produced on GOIP platform enables call transfer from GSM network into VoIP and vice versa. Standard interface of equipment doesn't allow to filter the inbound calls by operators and their codes, to set the call limits and duration. Yet it's possible with

GoIP equipment is capable to send and to receive SMS, but a standard SMS server often works incorrectly. The aforesaid software has its own well-tested SMS server. Besides, one can create SMS templates with a scheduled dispatch and parse the incoming SMS that automatically adjust further settings of GSM gateway. Basic USSD function can also be expanded to parse the answers and adjust further settings like preventing the SIM-card blocking.

Goantifraud service is a complete solution to manage the remote equipment, to set the route and duration for SIM-cards transfer (available with more than one GSM gateway and SIM-bank), browse the interface of GoIP from server and see the information on each single card, to separate and regulate the calls from different operators

Source: Wikipedia, Google