Expansion Boards

Expansion Boards

Yeastar S-Series VoIP PBX provides flexible telephony interfaces combination while allowing for future scalability with unique modular design. Besides the built-in rich SIP capabilities, S-Series lets you decide what types of extensions and physical trunks you need in your telephone system. When your business grows, adding more users and concurrent calls is also possible with S-Series.

D30 270x270

Product Details


  • Adds 100 VoIP Users & 30 Concurrent Calls


  • 1 onboard E1/T1/PRI port


  • 4 onboard module slots and 8 interfaces on the panel

Yealink Works With

Interested to know how Yealink products can help you to manage calls more efficiently?

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