... -port LANs, Serial port, PPTP, L2TP,GRE,IPSec, RIP/OSPF, Dual SIM/UIM backupSpecificationsMobile network (optional) 1. CDMA 2000 EVDO compatible ... Web10. Supports VLAN11. Supports IPSEC, GRE, PPTP, L2TP12. Supports dual SIM backup(H7932 only)13. Supports DTU function14. Supports LCP, ICMP check ...