Gainwise - Fixed Wireless Terminals, GSM Terminals, E1 / T1 GSM Gateways, Call Forwarding Boxes, SIM Card Management and Wireless Local Loop
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E1 / T1 PRI ISDN GSM gateways. The system is for carriers and distributors with digital PBX or trunk gateways. It can use one to 32 SIMs per module in a GSM channel.