Scalable and Modular S-Series VoIP PBX 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.
Add Techology Interfaces 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. S20 has 2 onboard module slots and S50 supports 4. 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.
Telephony Modules Available Supported Model: S20, S50, S100, S300
Expand System CapacityD30 ModuleAdd 100 VoIP Users + 30 Concurrent Calls Supported Model: S100 and S300
EX08 has 4 onboard module slots and 8 interfaces on the panel. Supported Models: S100 and S300
EX30 has 1 onboard E1/T1/PRI port. Supported Models: S100 and S300.
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