Yeastar S2 Module – 2 FXS Ports Expand the FXS Capacity of your S-Series IP PBX using the Yeastar S2 module. 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 S2 Module 2 FXS Ports Add 2 Analog telephones O2 Module 2 FXO Ports Connect 2 analog PSTN (POTS) lines. SO Module 1 FXS Port & 1 FXO Port Unique PSTN Fallback Function B2 Module 2 BRI Ports 2 x NT/TE BRI Ports GSM Module 1 GSM Channel 1 Channel for GSM Voice Calls Frequency: 850/900/1800/1900 MHz (quad-band) 3G Module 1 WCDMA Channel 1 Channel for WCDMA Voice Calls Frequency: 900/2100 MHz, 850/2100 MHz, 850/1900 MHz 4G LTE Module 3G/4G Voice Call & Data Insert 4G module on Slot_1 of S20&S50 and Slot_1 of EXP 1 of S100&S300.Learn more.
