1,8 channel-32 sims gsm gateway 2,IMEI auto rotate 3,Call termination 4,automatic rotate( ... . It can also be connected to a phone system to help reduce the cost of calling mobile phones. 2,SKYLINE 8PortsGSMFWT2 ... -11 of FXS/FXO port connection of any PBX, VoIP Gateway, head line phones or system. 3,The Parameters Of SKYLINE ...