... auto rotate 3,Call termination 4,automatic rotate(8ports 32 SIM cards) 5, call back Description of Product:1,What is FWT ... signal and make or receive a call in outdoor Locking SIM Card Locking mobile service provider Setting 10 group of number ... function,and can avoid blocking sim cards totally. B, 8 ports with 32 sim cards, every port has 4 sim cards for rotation, reduce long calling ...