Call Center SIM boxes are not using Internet connection at all. They are connecting directly to Thai mobile networks from over the border(AIS, True, DTAC, etc). The individual operators are connected over LAN network.
Why don't mobile network operators like AIS, DTAC, True etc. do anything to effectively render those call center SIM boxes inoperative by restricting service based on geo location? I know how to configure the Cellular Switch software to restrict and deny service for certain geographical area. Why don't those Mobile Network operators know how to do that? Incompetent, unprofessional or just greedy?
The SIM box signal is coming from over the border, from another country, but using Thai network SIM cards and Thai cellular networks.
There is a way to stop this at once and forever.