1 Channel Analog Telephone Fiber Converter PCM Voice Over Fiber Extender
Product Description
The 1-channel Telephone Fiber Converter is designed to transmit analog telephone (PCM voice) signals over long distances using fiber optic technology. It converts standard telephone signals into optical signals for transmission through fiber cables, ensuring reliable and interference-free communication.
Unlike traditional copper telephone lines, which are limited in distance and susceptible to electromagnetic interference, this fiber-based solution delivers clear and stable voice communication over distances up to 20km.
Equipped with standard RJ11/RJ45 interfaces, the device is compatible with telephones, PBX systems, and communication equipment. Its compact industrial design allows for easy installation in various environments such as telecom networks, security systems, and industrial sites.
With plug-and-play functionality, no configuration is required, making deployment fast and efficient. LED indicators provide real-time status monitoring of power and fiber link.
This solution is ideal for applications requiring secure, long-distance voice transmission with high reliability and low maintenance.
Key Features
1 Channel Voice Transmission
Supports single-channel telephone (PCM voice) over fiber
Long Distance Transmission (Up to 20km)
Perfect for remote communication and large-scale installations
Clear Voice Quality
Low noise and stable signal transmission
Strong Anti-Interference
Immune to EMI/RFI, ensuring reliable communication
Plug & Play
No configuration or software required
Standard Telephone Interface
RJ11/RJ45 compatible with phones and PBX systems
Compact Industrial Design
Durable metal housing for long-term use
Real-Time Status Indicators
LED indicators for power and fiber link monitoring
Application Scenarios
- Telecom Networks
- PBX & Enterprise Communication Systems
- Security & Intercom Systems
- Industrial Communication
- Campus Communication Networks
- Remote Site Voice Transmission
Specifications
| Category | Specification |
| Channel | 1 Channel Telephone (PCM Voice) |
| Interface | RJ11 / RJ45 (P1 Port) |
| Signal Type | Analog Telephone / PCM Voice |
| Fiber Connector | SC / FC / ST (Optional) |
| Fiber Type | Single-mode fiber (SMF) |
| Transmission Distance | 0–20km |
| Voice Bandwidth | 300Hz – 3.4kHz |
| Encoding | PCM |
| Signal-to-Noise Ratio | ≥ 70dB |
| Crosstalk | ≤ -65dB |
| Bit Error Rate | ≤ 10⁻⁹ |
| Delay | < 5ms |
| Power Supply | DC 5V / 12V |
| Power Consumption | ≤ 3W |
| LED Indicators | Power (P), Fiber Link (F) |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 0–95% (non-condensing) |
| Housing Material | Aluminum Alloy |
| Installation | Wall Mount / Desktop |
| Dimensions | Approx. 100 × 80 × 30 mm |
| Weight | Approx. 0.3–0.5 kg |
Application

Analog Telephone Fiber Converter
,1 Channel Telephone Fiber Converter
,PCM Voice Over Fiber Extender
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