The 4-Channel Telephone Fiber Optic Multiplexer is a professional voice transmission solution designed to extend multiple analog telephone circuits over optical fiber. The system supports four independent telephone channels and converts analog voice signals into optical signals for secure, stable, and long-distance transmission.

Using advanced digital fiber optic technology, the device effectively eliminates electromagnetic interference (EMI), radio frequency interference (RFI), lightning-induced surges, and signal degradation associated with traditional copper telephone lines. This ensures crystal-clear voice communication even in electrically noisy or harsh industrial environments.

The multiplexer is ideal for PBX extensions, emergency communication systems, campus networks, transportation hubs, power substations, industrial plants, security monitoring centers, and remote office communication systems. It provides reliable voice transmission over distances up to 20 km on single-mode fiber and supports plug-and-play installation for rapid deployment.

Its compact industrial metal enclosure, low power consumption, and continuous operation capability make it an excellent choice for mission-critical voice communication applications.

Applications

• PBX Telephone Extension Systems
• Corporate Office Communication Networks
• Campus Communication Systems
• Emergency Telephone Networks
• Highway and Railway Communication Systems
• Airport and Metro Communication Systems
• Power Utility Communication Networks
• Industrial Plant Voice Networks
• Security Monitoring Centers
• Government Communication Facilities

Product Features

4 Independent Telephone Channels

• Supports 4 analog telephone lines simultaneously.
• Transparent voice transmission without compression.
• Supports standard PSTN and PBX telephone systems.

Long-Distance Fiber Transmission

• Up to 20 km transmission over single-mode fiber.
• Multi-mode fiber options available.
• Extended distance modules optional.

Superior Voice Quality

• High voice clarity and low distortion.
• Low transmission delay.
• Stable and reliable communication.

Anti-Interference Design

• Complete optical isolation.
• Immune to EMI, RFI, and lightning interference.
• Suitable for industrial environments.

Plug-and-Play Operation

• No software configuration required.
• Easy installation and maintenance.
• Automatic signal adaptation.

Industrial-Grade Reliability

• Rugged metal housing.
• Fanless cooling design.
• Supports 24/7 continuous operation.

Wide Compatibility

• Compatible with PBX systems.
• Compatible with analog telephones.
• Compatible with intercom and emergency communication systems.

Technical Specifications

Application

Package Contents

• 1 × 4-Channel Telephone Fiber Optic Transmitter (TX)
• 1 × 4-Channel Telephone Fiber Optic Receiver (RX)
• 2 × Power Adapters
• 1 × User Manual
• 1 × Quick Installation Guide
• 1 × Warranty Card
• 1 × Protective Packaging Box