Description

Yeastar O2 Module 2FXO YST-O2 Overview

The Yeastar O2 Module 2FXO YST-O2 is a two-port FXO expansion module designed to connect analogue PSTN or POTS telephone lines to compatible Yeastar IP-PBX systems. It provides two RJ11 FXO interfaces, allowing businesses to continue using existing analogue telephone services while managing calls through an IP-based business telephone system. 

The module is particularly useful for hybrid telephony environments where an organization wants to combine traditional telephone lines with VoIP. It can provide additional analogue trunk capacity for supported Yeastar PBX platforms and can also be useful as part of a PSTN connectivity or failover strategy. 

Yeastar O2 Module 2FXO YST-O2 Price in Kenya

Yeastar O2 Module 2FXO YST-O2 Specifications

Compatibility should be confirmed against the specific PBX model before purchase because module support can vary between Yeastar systems and generations. Current technical listings identify the module for systems including S20, S50, S100 and S300, while newer listings also identify supported P-Series models. 

Yeastar O2 Module 2FXO YST-O2 Performance

• Provides two dedicated FXO channels for analogue telephone connectivity.

• Allows a compatible IP-PBX to handle calls over traditional PSTN lines.

• Supports both incoming and outgoing analogue-line calls.

• Echo cancellation helps improve voice quality during calls.

• Ring detection enables the module to identify incoming analogue-line ringing conditions.

• Provides a practical bridge between legacy telephone infrastructure and VoIP.

• Adds analogue trunk capacity without requiring an external standalone gateway.

• Can be incorporated into hybrid PBX deployments where analogue and IP telephony operate together. 

Yeastar O2 Module 2FXO YST-O2 Design and Build

• Compact internal expansion-card design.

• Designed to be installed directly into a compatible Yeastar PBX expansion slot.

• Uses RJ11 interfaces for analogue telephone-line connections.

• Does not require a separate external power adapter when installed in a compatible PBX.

• Internal installation keeps analogue trunk connections integrated within the PBX enclosure.

• Suitable for professional office and business telephone-system installations. 

Yeastar O2 Module 2FXO YST-O2 Connectivity and Compatibility

• Connects two analogue PSTN or POTS lines to a compatible Yeastar IP-PBX.

• Compatible with selected Yeastar S-Series PBX systems.

• Current product information also identifies compatibility with selected P-Series systems, including P550, P560 and P570 on some listings.

• Supports RJ11 analogue telephone-line connections.

• Can be configured as analogue trunks within the PBX.

• Useful for businesses migrating from traditional telephony to VoIP while retaining existing telephone lines.

• Compatibility should be checked with the exact PBX hardware and firmware before installation. 

Yeastar O2 Module 2FXO YST-O2 Ideal Use Cases

• Small and medium-sized businesses needing additional analogue telephone lines.

• Office PBX systems that require PSTN trunk expansion.

• Hybrid telephone systems combining analogue and VoIP services.

• Branch offices using existing PSTN lines.

• Businesses transitioning to VoIP while maintaining legacy telephone services.

• PSTN failover deployments requiring an alternative route for business calls.

• Hotels and commercial establishments using compatible Yeastar PBX systems.

• Organizations with existing analogue telephone infrastructure that want centralized IP-PBX management.

Yeastar O2 Module 2FXO YST-O2 FAQs

What is the Yeastar O2 Module 2FXO YST-O2 used for?

It is used to connect two analogue PSTN or POTS telephone lines to a compatible Yeastar IP-PBX.

How many FXO ports does the YST-O2 have?

The module has two RJ11 FXO ports. 

Can the Yeastar O2 Module connect to PSTN lines?

Yes. The two FXO ports are designed to terminate analogue PSTN telephone lines. 

Does the O2 module support echo cancellation?

Yes. Echo cancellation is supported on the module. 

Is the Yeastar O2 a standalone gateway?

No. It is an internal PBX expansion module designed for installation in compatible Yeastar systems.

Which Yeastar PBX systems support the O2 Module?

Compatibility varies by PBX generation and configuration. Product information lists systems such as S20, S50, S100 and S300, with some current listings also identifying selected P-Series models. Always confirm the exact PBX model before ordering. 

What type of connector does the O2 Module use?

It uses RJ11 FXO ports for analogue telephone-line connections.

Can it be used for incoming and outgoing calls?

Yes. The FXO ports can provide two-way connectivity for incoming and outgoing calls through connected analogue lines. 

Yeastar O2 Module 2FXO YST-O2 Pros and Cons

Yeastar O2 Module 2FXO YST-O2 Conclusion

The Yeastar O2 Module 2FXO YST-O2 provides a straightforward way to add two analogue PSTN lines to a compatible Yeastar IP-PBX. With two RJ11 FXO ports, echo cancellation and support for incoming and outgoing analogue calls, it is a practical choice for businesses that need to combine traditional telephone services with modern VoIP infrastructure.