SIMPOOL256 is an equipment which can integrated storage SIM cards. The maximum capacity is 256. It can be perfectly compatible with SK 8 ports, SK16 ports and SK32 ports series gateways. With SIM server, SIM Pool can easily communicate with gateways via IP network. In this way, we can manage the SIM cards remotely. SIM Box, also known as a SIM Gateway or GSM Gateway, is a telecommunication device that enables the routing of calls or SMS messages through multiple SIM cards. It is often used to bypass international call or SMS charges by taking advantage of lower local rates. A SIM Box typically has multiple SIM card slots and can handle a large number of concurrent calls or messages