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GQ3001/2/4N
1/2/4-channel telephone optical transceiver
Keywords
Commercial Switches
Domestic Switches
隐藏域元素占位
Category:
Commercial Switches
Domestic Switches
Product Overview
The GQ3001/2/4N telephone optical transceiver can transmit 1, 2, or 4 voice channels over fiber optic links. This device employs a dedicated digital multiplexing chip that integrates nearly all of the unit’s digital logic functions, thereby significantly enhancing performance while reducing costs. The equipment delivers excellent overall performance, operates with stable and reliable operation, features low power consumption, high integration, a compact footprint, and is easy to install and maintain.
Guangqiao is one of the earliest domestic manufacturers of telephone optical transceivers. Our entire product line is independently developed, manufactured, and sold directly by our company. We possess core technologies, employing PCM pulse-code modulation to deliver crystal-clear voice quality and stable, reliable communication. Each voice channel is equipped with a three-level overcurrent and overvoltage protection circuit, setting our products apart from devices that use video‑based optical transceivers, which often produce muffled audio and unstable calls. Our solutions are widely deployed across major private networks and public networks in government agencies, the power sector, public security, the military, civil aviation, maritime operations, mining, highways, and other critical industries.
Product Features
1. Provides 1-, 2-, or 4-channel telephone interfaces, with no compression and excellent voice quality.
2. The optical port supports multimode or single-mode, and can operate over a single fiber or dual fibers.
3. The device supports FXO and FXS interfaces: the FXO port connects to a PBX, while the FXS port connects to user terminals.
4. The voice interface supports caller ID and fax.
5. Compact size, aesthetically pleasing design, and easy installation and operation.
6. Enhanced status display functionality for easier maintenance and management.
| Protocol Standard | |
| Follow the standard | The call‑path characteristics comply with the “General Technical Specifications for Telephone Switching Equipment of the Ministry of Posts and Telecommunications.” |
| Interface parameters | |
| Voice Interface (FXO & FXS) | PCM encoding, 64 kbps per voice channel. FXO port: Connects to a PBX. Secondary input impedance: 600 Ω (off-hook) Ring detection voltage: 35 V Ring detection frequency: 17–60 Hz Return loss: 20 dB User port (FXS): Connects to the user’s telephone. Secondary input impedance: 600 Ω (off-hook) Ring voltage: 75V Ringing frequency: 25 Hz Return loss: 20 dB |
| Optical interface | Bit rate: 155 Mbps ±20 ppm Line code: NRZ + Scrambling Optical wavelengths: 850 nm, 1310 nm, 1550 nm Optical transmit power: > -12 dBm Receiving sensitivity: < -36 dBm |
| Number of interfaces | |
| Optical port | Quantity: 1 piece Interface type: 1×9 fixed optical ports, single‑fiber/dual‑fiber, supporting FC/SC/ST connectors (FC connectors are the default at shipment). Transmission distance: Multimode fiber: 2 km; Single-mode fiber: 20/40/60/80/100/120 km |
| Voice interface | Number of telephone lines: 1/2/4 lines Interface type: RJ11 jack |
| Power Supply Characteristics | |
| Input voltage | AC 220V to DC 12V (external power adapter) |
| Full-load power consumption | <5W |
| Wiring method | DC5525 power connector |
| Overload protection | Support |
| Work environment | |
| Operating temperature | -10～60℃ |
| Storage temperature | -40～85℃ |
| Relative humidity | 5% to 95% (non-condensing) |
| Mechanical Properties | |
| Shell | Metal casing |
| Installation Method | Desktop installation |
| Size | External power supply, 103×90×30 mm |
| Warranty | |
| Warranty period | Two years |
Device model | Voice input | Optical port | Power supply |
GQ3001N | Line 1 telephone | 1 FC/SC/ST optical port optional | External power adapter |
GQ3002N | Line 2 telephone | 1 FC/SC/ST optical port optional | External power adapter |
GQ3004N | Line 4 telephone | 1 FC/SC/ST optical port optional | External power adapter |
| When placing an order, please confirm whether the optical port is multimode or single-mode, whether it uses a single fiber or dual fibers, and the transmission distance in kilometers. | |||
Application Diagram: Fiber Optic Point-to-Point Networking
Related Documents
Name
Size
Type
Release Date
Download
Technical Specification (Desktop-Type Optical Telephone Terminal with 4 Ports or Fewer)
227.5KB
2025-08-09
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