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 Telephony 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, S50 and S412 supports 4. S100 and S300 require the combination of Expansion Board and Telephony Module to add telephony interfaces. S100 allows 2 Expansion Boards and S300 supports 3.

Telephony Modules Available

Telephony modules like FXS extensions module, FXO module,PSTN fallback module, BRI module, and GSM/3G/4G module are available.

Expansion Board

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

Expand System Capacity

Expand SIP users and concurrent calls when your business grows with D30 DSP Module.

Add 100 VoIP Users & 30 Concurrent Calls
Supported Model: S100 and S300