The core components of cat pool equipment

The structure design of cat pool equipment is compact and usually consists of the following main components:
one
Multi card slot (SIM card tray)
two
1. It usually supports the insertion of multiple (such as 16, 32, or even 128) SIM cards.
2. Each card slot works independently and can be switched and operated through software.
3. Some devices support hot swapping, which improves flexibility 
three
Multi channel modulation and demodulation module (modem module)
four
1. Each module is equipped with an independent modem for signal modulation and demodulation.
2. Support voice calls, SMS transmission, and data internet access functions.