2 Channel Telephone Fiber Converter Dual Port PCM Voice Over Fiber Extender
The 2-channel Telephone Fiber Converter is a professional communication device designed to extend two independent telephone (PCM voice) channels over long distances via fiber optic cable. It converts analog voice signals into optical signals, enabling reliable and interference-free transmission.
Featuring dual RJ11/RJ45 ports (P1 & P2), the device supports simultaneous connection of two telephones or PBX extensions. It is ideal for enterprise communication systems, campus networks, industrial communication, and remote site voice connectivity.
Compared to traditional copper-based telephone lines, this fiber optic solution eliminates signal attenuation, noise, and electromagnetic interference, ensuring crystal-clear voice quality even over distances up to 20km.
With a plug-and-play design, no configuration is required. The compact metal housing allows for easy installation in various environments, while LED indicators provide real-time monitoring of power and fiber link status.
This device is particularly suitable for applications where multiple voice channels need to be transmitted securely and reliably over long distances.
Application Scenarios
- PBX Telephone Systems
- Enterprise & Campus Communication
- Industrial Communication Systems
- Security & Intercom Systems
- Remote Office Connectivity
- Telecom Infrastructure
Key Features
Dual Channel Voice Transmission
Supports 2 independent telephone lines (P1 & P2)
Long Distance (Up to 20km)
Perfect for remote communication and distributed systems
Clear & Stable Voice Quality
Low noise, high clarity PCM transmission
Strong Anti-Interference
Immune to EMI/RFI, ensuring reliable communication
Plug & Play Operation
No setup or configuration required
Standard Telephone Interfaces
Dual RJ11/RJ45 ports compatible with phones and PBX systems
Compact Industrial Design
Durable metal enclosure for long-term use
Real-Time LED Indicators
Power and fiber link status monitoring
Specifications
| Category | Specification |
| Channel | 2 Channel Telephone (PCM Voice) |
| Interface | RJ11 / RJ45 (P1, P2 Dual Ports) |
| Signal Type | Analog Telephone / PCM Voice |
| Encoding Method | PCM |
| Fiber Connector | SC / FC (Optional) |
| Fiber Type | Single-mode fiber (SMF) |
| Transmission Distance | 0–20km |
| Voice Bandwidth | 300Hz – 3.4kHz |
| Signal-to-Noise Ratio | ≥ 70dB |
| Crosstalk | ≤ -65dB |
| Bit Error Rate | ≤ 10⁻⁹ |
| Delay | < 5ms |
| Power Supply | DC 5V / 12V |
| Power Consumption | ≤ 4W |
| 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 | Desktop / Wall Mount |
| Dimensions | Approx. 120 × 90 × 35 mm |
| Weight | Approx. 0.4–0.7 kg |
Specifications

2 Channel Telephone Fiber Converter
,Telephone Fiber Converter Dual Port
,Telephone Over Fiber Extender
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