Telephone over Fiber Multiplexer for Secure and Scalable Communication

In an era where secure and high-quality voice communication remains essential across industries such as energy, public safety, transportation, and government, fiber-optic technologies are revolutionizing legacy telephony. Among these advanced solutions, the 8-Channel Telephone over Fiber Multiplexer emerges as a critical device designed for long-distance analog voice over fiber. It ensures stable, high-fidelity communication with complete immunity to electromagnetic interference, making it ideal for mission-critical deployments.

What Is an 8-Channel Telephone Over Fiber Multiplexer?

The 8-channel fiber telephone multiplexer is a dedicated Voice over Fiber device that converts and transmits eight analog voice channels—either FXS over fiber or FXO over fiber—via a single optical fiber. Compatible with traditional PBX systems and analog telephones, this multiplexer acts as a seamless bridge between copper-based voice systems and high-speed fiber infrastructure. It eliminates the limitations of twisted pair wiring, providing a highly reliable and scalable fiber telephony solution for complex environments.

Whether deployed in substations, tunnel control centers, military command posts, or remote monitoring stations, this fiber optic voice multiplexer ensures uninterrupted communication across distances up to 120 km.

Key Features and Benefits

✔ 8 Voice Channels (FXS/FXO Options)

Supports up to 8 analog voice ports using standard RJ11 interfaces. Choose between FXS (subscriber side) or FXO (PBX side) to match your network design and application needs.

✔ Single-Fiber Voice Transmission

Aggregate all 8 telephone lines into one optical link, significantly reducing cabling, installation time, and deployment cost.

✔ Voice Clarity Over Distance

Utilizes ITU-T G.711 PCM encoding at 64kbps per channel to maintain crystal-clear audio even across long distances, perfect for critical intercom or dispatch systems.

✔ Transmission Distance up to 120km

Available in various configurations to support fiber links from 20km to 120km, offering broad coverage for large-scale communication networks.

✔ Anti-Interference and Industrial Reliability

Immune to EMI, ground loops, and lightning. Its rugged design is suited for industrial automation, power substations, and high-interference zones.

✔ Plug-and-Play Deployment

With no software configuration needed, this fiber telephone multiplexer features plug-and-play installation, reducing network integration time and support costs.

Application Scenarios

This analog telephone over fiber multiplexer supports diverse applications where fiber voice transmission is needed:

Power Substations: Voice channels support SCADA command relay and maintenance coordination, even under harsh electromagnetic conditions.

Public Safety & Military Use: Rapid deployment of voice networks for emergency communication, voice dispatch, and surveillance integration in field units and command vehicles.

Railway and Metro Systems: Ensures reliable communication for station announcements, intercoms, and trackside operations in tunnels or depots.

Government & Smart Cities: Enables secure telephone communication between traffic monitoring centers, municipal offices, and checkpoint hubs.

Technical Specifications (Summary)

Why Choose Us?

We are a trusted provider of fiber optic communication solutions, specializing in telephone over fiber multiplexers, PDH multiplexers, and multi-service optical transmission platforms. Our products meet the highest standards of industrial communication reliability.

 Customization Available

We offer tailor-made configurations, including:

FXS / FXO combinations (2/4/8/16 ports)

NMP / Web management options

Dual power redundancy

Rackmount or DIN-rail designs

Multi-language support (English/Chinese)

Contact us today for customized fiber telephony solutions that meet your exact deployment needs. Whether you're upgrading an existing analog system or designing a new fiber voice network, we are here to deliver performance, reliability, and value.