Yeastar S-Series VoIP PBX – Business Phone System

Yeastar S-Series VoIP PBX offers a scalable solution that is easy to install and manage and that has been built to provide the ultimate performance quality. Targeted for small and medium size enterprises, the Yeastar S-Series VoIP PBX – Business Phone System can support a range of 20 to 300 users and 10 to 60 concurrent calls.  The S-Series PBX can be configured with any of the telephony interfaces.  The Yeastar S20 supports 2 modules without expansion boards, yeastar S50 supports 4 modules without expansion boards, yeastar S100 supports 8 modules=2 expansion cards, and Yeastar S300 supports 12 modules=3 expansion cards. One Expansion card can support 4 modules. On S100 and S300, you must install expansion boards if you want to add modules or PRI port. The S100 and S300 support the D30 module to add 100 users and 30 calls. Yeastar Telephony Modules include S2 Module has 2 FXS Ports, O2 Module has 2 FXO Ports, SO Module has 1 FXS Port and 1 FXO Port, B2 Module has 2 BRI Ports , GSM Module has 1 GSM Channel. Frequency: 850/900/1800/1900 MHz (quad-band), 3G Module has 1 WCDMA Channel. Frequency: 900/2100 MHz, 850/2100 MHz, 850/1900 MHz. The  Expansion Modules include EX30 has 1 onboard E1/T1/PRI port,  EX08 has 4 onboard module slots and 8 interfaces on the panel.