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- USA
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
Yeastar SO Module – 1 FXO + 1 FXS Port Module, PSTN Failover Support, Echo Cancellation, for S-Series & P-Series PBXYeastar SO Module Key Product Specifications: Manufacturer: Yeastar Model: SO Module Product Type: FXO FXS Module Port Type: 1 FXO RJ11, 1 FXS RJ11 Supported PBX Models: S20, S50, S100, S300, P550, P560, P570 FXO Ring Frequency Detection: 1550 Hz FXS Ring Frequency: 25 Hz Ring Voltage: 85V Termination Support: PSTN lines and analog telephone fax Failover Function: Supported Echo Cancellation: Supported Terminating Impedance: 600 Ohm Yeastar SO Module
Yeastar SO Module Key Product Specifications:
- Manufacturer: Yeastar
- Model: SO Module
- Product Type: FXO/FXS Module
- Port Type: 1 × FXO RJ11, 1 × FXS RJ11
- Supported PBX Models: S20, S50, S100, S300, P550, P560, P570
- FXO Ring Frequency Detection: 15–50 Hz
- FXS Ring Frequency: 25 Hz
- Ring Voltage: 85V
- Termination Support: PSTN lines and analog telephone/fax
- Failover Function: Supported
- Echo Cancellation: Supported
- Terminating Impedance: 600 Ohm
Yeastar SO Module is a dual-port FXO/FXS module designed to provide automatic PSTN failover functionality for Yeastar PBX systems at best price. Featuring one FXO port and one FXS port, the module ensures uninterrupted communication by directly bridging analog telephones to PSTN lines during power outages or system failures. With support for analog phones, fax machines, and PSTN connectivity, along with built-in echo cancellation and impedance adjustment, the SO Module delivers reliable voice communication and enhanced business continuity.
Yeastar SO Module Key Product Features:
- 1 FXO + 1 FXS port with auto failover function
- Ensures call continuity during power outage
- Supports analog phones, fax machines, and PSTN lines
- Built-in echo cancellation
- Compatible with Yeastar S-Series and P-Series PBX systems
- Direct PSTN bridging during system failure
- Supports impedance adjustment for reliable operation
- Designed for uninterrupted business communications
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1372 reviews
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Product Reviews
★★★★★ 5
Great quality, color, look and price! So happy the yellow was back in stock when I purchased
Oh my gosh. I absolutely love this sweater on my 44-year-old son. He loves it as well. He is wearing a size medium in the picture. Great quality, launders as well. He simply washes it in the machine with cold water and then puts it on a hanger to dry. It is one of his faves!
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Comfortable Sweater!
Great quality sweater. True to size! Comfy, too!
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Wash and wear is fantastic
Great sweater. Wash and wear is fantastic. No shrinking or wrinkles. Fits very well and soft.
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Reviewed in the United States on January 14, 2026
★★★★★ 4
The Fit.
The sweater is awesome. Fits great, feels great on and it keeps me warm.
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Reviewed in the United States on November 8, 2025
★★★★★ 5
Great holiday sweater!
Special Size: Wide Ribs, Size: Large, Color: Lake Green
Good looking shirt! Bought for husband for our holiday pictures to wear over a collared shirt and it looked high quality, was soft and felt comfortable despite it being 70 degrees
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Reviewed in the United States on December 19, 2025