Yeastar D30 DSP module for expanding Yeastar PBX call capacity

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Expand the capacity (number of user registrations and concurrent call count) of Yeastar P560, P570, S100 or S300 model IP PBX. 

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

Supported Model: Yeastar P560, P570, S100 or S300