Free In-Network Calling
Calls within the operator’s network are absolutely free of charge.
Grandstream GXW 4004 offers small organizations, home users, remote offices and companies with a territorial work system a high-performance solution with excellent price/quality ratio to more effectively manage the cost of communication, while expanding the functionality of existing telephone systems in organization. Grandstream GXW 4004 is a solution, which easily integrates into existing VoIP FXS phone systems and FXO gateways.
CallExchange
CallExchange provides companies looking to enter the retail telecommunications business a turnkey solution to rapidly and cheaply deploy prepaid and postpaid calling cards and accounts, as well as VoIP softphones and customer premise equipment.
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