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Yeastar Expansion Board

Yeastar Expansion Board


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.

With Yeastar S-Series, all the telephony interfaces are modular and customizable, whether it’s FXS, FXO, ISDN BRI, GSM/3G, or E1/T1/PRI. S100 and S300 require the combination of Expansion Board and Telephony Modules to add telephony interfaces. S100 allows 2 Expansion Boards and S300 supports 3.

  • EX08 has 4 onboard module slots and 8 interfaces on the panel. Supported Model: S100 and S300
  • EX30 has 1 onboard E1/T1/PRI port. Supported Model: S100 and S300

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