SIM box for 300 SIM cards unpacking

Learn more about SIM box SIM box allows you to install and manage from 20 to 300 SIM cards of different mobile operators that enables work of several GSM gateways placed in different locations. You can keep your SIM cards away from the GSM gateway. It allows you to attach a separate SIM card for GSM/VoIP gateway module, enabling the same card to call from different points thereby reducing the risk of blocking. One of the optimization algorithms of the system is the