To start your VoIP GSM termination business, you will need a large number of SIM-cards. They will need to be inserted into slots of gateways or downloaded virtually, using a SIM-bank. You will need SIM-cards at every stage of your business since they will be used to make calls for the final termination. Accordingly, you will need a constant source of new starter packages.
Some terminators buy SIM-cards on their own, but it all depends on the country where you plan to work. In many countries, there are restrictions on the purchase of numbers, sometimes it is required to provide documents. It occurs that there is an opportunity to purchase SIM-cards from street vendors. Usually, these cards are registered to other people's names. But it is better to find a dealer for permanent cooperation, which deals with the sale of SIM-cards in large quantities.
Where can you find such a dealer? There are several options:
- On thematic forums on the Internet, indicate the GSM operator of interest to you in the search request and the region where you plan to work.
- In social networks, using the search by groups.
- On the bulletin boards on the Internet, in the relevant sections.
We recommend getting acquaintance with several dealers. Cooperation with several dealers will protect you. Dealers work illegally, as well as they can be tracked, and the SIM cards they supply are blocked. We also recommend buying starter packages in small batches.
It is important to be able to check your SIM-cards. You need to make sure that they will work in the region where you are going to place your gateways. If you are not sure of the decency of the seller when sending cards from another city - insist on the way of payment by cash on delivery. Then you will be able to pay for the starter packages upon receipt.
The number of SIM-cards for work should correspond to the number of channels involved in the operation. If voip call hardware is an 8-channel gateway, you will need at least 8 cards, and a few more. All channels must work constantly to avoid the idle capacity.