Yeaster D30 Expansion Module.

D30 Module lets you expand Yeastar S-Series VoIP PBX. Thanks to the PBX  flexible telephony interfaces combination which allow for future scalability with such a unique modular design. D30 Module allows you to add up to 100 new users and  30 concurrent calls. You will be able to add more uses and concurrent calls easily to meet growing business needs as your business expands,

Features of D30 Expansion Module

• DSP Expansion Module for Yeastar S100 and S300 Systems
• Install on the motherboard to expand capacity by 100 extensions and 30 concurrent calls
• Use up to 1 module on the S100 and up to 2 modules on the S300
• Supported Model: S100, S300, P560, P570