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The Yeastar D30 card increases the capacity of s S Series S100 nad S300 IP PBX System.Each D30 card adds 100 VoIP users and 30 concurrent calls to the PBX System. Yeastar S100 support one additional DS30 card and Yeastar S300 support two D30 Card.
The D30 is a DSP Module that expands the capacity of PBX System.The Yeastar S Series allow future expansion by adding the DSP card thus protecting your investment.The DSP card allows to add 100 more users and 30 more concurrent calls.
