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- USA
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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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 2472 reviews
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Product Reviews
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
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Reviewed in the United States on July 5, 2024
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
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Reviewed in the United States on July 13, 2025
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
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Reviewed in the United States on February 20, 2024
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly.
Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration.
Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025