Description
Yeastar S20 VoIP PBX
Advanced communication features to create effective business communication experience for
small business, connecting to traditional lines, VoIP lines, and cellular networks.


Flexible Modular Design
With Yeastar S-Series, all the telephony interfaces are modular and
customizable, S20 support 2 onboard module slots to
custom FXS, FXO, ISDN BRI, GSM/3G/4G.

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- B2 Module
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- O2 Module
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- S2 Module
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- SO Module
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- 4G Module
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- 3G Module
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- GSM Module
Linkus Mobile Client.
Stay Connected anywhere anytime.
Coordinated with S-Series VoIP PBX, Linkus Mobile Client makes your Android or iOS mobile phone an office extension.