YST-SO - Yeastar 1FXS and 1 FXO port | Aztek Computers
29+Years
SKU: QKPNEQKUU7 |  Mfg. Part: YST-SO  | 
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YST-SO - Yeastar 1FXS and 1 FXO port

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Condition: New

$108.42  $146.37
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Product Overview

- 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.

Expert Overview

The Yeastar YST-SO module provides a combined 1 FXS port and 1 FXO port, designed for integration into various MyPBX systems and TDM800 Cards. This module enables businesses to connect an analog telephone or fax machine (FXS) and an analog PSTN line (FXO) to their IP PBX. A key feature is its unique PSTN Fallback Function, which allows for continued call making and receiving even if the primary system experiences a power breakdown. This ensures basic communication continuity for essential services. The YST-SO module is compatible with MyPBX SOHO, MyPBX Standard, MyPBX Pro, MyPBX E1, MyPBX E1 Plus, MyPBX Enterprise, and the TDM800 Card, making it suitable for organizations looking to integrate analog lines and devices into their existing or new Yeastar IP telephony infrastructure.

Technical Specifications

Modules and Cards: Yes
Color: Black

Product Details

  • Manufacturer:
  • Model Number:
  • Condition:
  • Weight:
  • Dimensions:
  • Updated:
  • Added:
  • Yeastar
  • YST-SO
  • New
  • 0.05 lbs
  • 2 X 0 X 2
  • Jul 19, 2026
  • Oct 29, 2025
Product Identifiers: Brand: Yeastar • Part #: YST-SO • Category: Business Phones

Frequently Asked Questions

What is the primary function of the YST-SO module?

The YST-SO module provides one FXS port and one FXO port, allowing for the connection of an analog telephone/fax machine and an analog PSTN line to a compatible MyPBX system or TDM800 Card.

Which Yeastar systems are compatible with this module?

This module is compatible with MyPBX SOHO, MyPBX Standard, MyPBX Pro, MyPBX E1, MyPBX E1 Plus, MyPBX Enterprise, and the TDM800 Card.

What is the PSTN Fallback Function?

The PSTN Fallback Function allows users to make and receive calls even if the main system experiences a power breakdown, ensuring basic communication continuity.

What is included with the YST-SO module?

The product description specifies it is a module with 1 FXS port and 1 FXO port. No other components are detailed in the provided data.

YST-SO - Yeastar 1FXS and 1 FXO port

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Reviews for Yeastar YST-SO

$108.42