Yeastar SO 1 FXO 1 FXS Module

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• 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.
• Yeastar SO Module 1FXS and 1 FXO - Yeastar SO Module with 1FXO+1FXS. The Yeastar SO Module is compatible with MyPBX series and S-Series PBX and has a unique PSTN Fallback Function enabling you to make/receive calls even when system powers down
• Yeastar SO Module 1FXS and 1 FXO - A module with 1 FXS port and 1 FXO port. Unique PSTN Fallback Function! Make/receive calls even during a system power break down. It can be used in MyPBX SOHO, MyPBX Standard, MyPBX Pro, MyPBX E1, MyPBX E1 Plus, MyPBX Enterprise and TDM800 Card.

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