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|· Features 1x FXO RJ11 Port and 1x FXS RJ11 FXO Port|
|· 15~50Hz FXO Ring Frequency Detection along with a 25Hz FXS Ring Frequency|
|· Terminates PSTN lines and Analog Telephone / Fax Machines|
|· PSTN failover function, allows for making/receiving calls even when a system powers down|
|· Supports S20, S50, S100, S300 S-Series VoIP PBX|
Yeastar S-Series VoIP PBX provides flexible telephony interfaces combination while allowing for future scalability with a 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.
Yeastar's SO module is a module with one FXO port and one FXS port to offer a unique PSTN failover function, enabling you to make/receive calls even when system powers down.