Yeastar D30 DSP module for expanding capability of Yeastar S series PBX

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Expand the capacity (number of user registrations and concurrent call count) of Yeastar S100 or S300 model IP PBX. 

The Yeastar D30 PBX Capacity Expansion Card adds capacity for 100 extra Extensions and 30 extra Concurrent Calls

Supported Model: S100 and S300.