Yeastar D30 Module Expansion Board, Black

Highlights: The Yeastar D30 is a DSP module, used to expand the capacity of S-Series PBX. For each D30 module added, the max amount of users increased by 100, and concurrent calls increase by 30. Use up to 1 module on the S100, and up to 2 modules on the S300. The Yeastar D30 DSP (digital signal processor) module can be inserted into a Yeastar S100 or S300 IP-PBX, letting the VoIP PBX support an additional 100 users and 30 concurrent calls. Expand the power of your VoIP phone system without needing expensive hardware with this module.