Yeastar P-Series PBX System and S-Series VoIP PBX provide flexible telephony interfaces combination while allowing for future scalability with unique modular design. Besides the built-in rich SIP capabilities, you can decide what types of extensions and physical trunks you need in your telephone system. When your business expands, more uses and concurrent calls can also be added easily to meet growing business needs.

S2 Module – plugin module for integrating analog extension devices like cordless phones, fax machines, Eftpos etc. Each module comes with 2 ports for 2 analog devices.

O2 Module – plugin module for integrating PSTN trunks, each module comes with 2 PSTN ports capable of supporting 2 PSTN lines.

SO Module – plugin module for integrating 1 x PSTN trunk and 1 x Analog Extension, the module comes with 1 PSTN port and 1 Analog extension port.

B2 Module –  plugin module with  2 x NT/TE BRI Ports for ISDN BRI lines.

4G LTE Module – plugin module provides 4G cellular data on SIM card, making the 4G LTE become the primary Internet connection.

Please select the required modules from below drop-down menu.