Single fiber bi-directional data links symmetric 1.25Gbps application
1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver
Digital burst RSSI function to monitor the input optical power level
Reset-less burst-mode receiver simply the system design
More than 24dB wide dynamic range
0 to 70°C operating case temperature,
Single 3.3V power supply
Digital diagnostic monitoring interface
LVPECL compatible data input/output interface
LVTTL transmitter disable control
LVTTL transmitter laser fault alarm
RoHS-6 compliance
LVTTL receiver loss of signal indication
Low EMI and excellent ESD protection
Class I laser safety standard IEC-60825 compliant
GOXS-BI4312-20PON+++:
The GOXS BI4312 20PON+++ is a high-performance, carrier-grade GPON Optical Line Terminal (OLT) designed for next-generation fiber optic broadband infrastructure. With 20 GPON ports, 4 10GE uplink ports, and 12 GE SFP uplink ports, this compact yet powerful device is ideal for ISPs, telecom operators, and large-scale enterprise networks looking to deliver high-speed internet, IPTV, VoIP, and smart city applications over FTTH/FTTx architecture.
Built to support massive subscriber bases with reliable throughput and scalable expansion, this device offers a flexible, modular platform with advanced Layer 2/3 switching, security, and network management capabilities. The GOXS-BI4312-20PON+++ helps operators reduce costs, improve deployment efficiency, and deliver consistent quality of service.
Key Features
20 GPON Ports
Each port supports up to 128 ONTs, enabling a total subscriber capacity of up to 2,560 endpoints using a 1:128 split ratio. Ideal for dense deployments across urban or suburban areas.
High Uplink Bandwidth
Includes 4 x 10 Gigabit Ethernet (10GE) ports and 12 x Gigabit SFP uplink interfaces, ensuring ample backhaul bandwidth to support heavy traffic from multiple users and services.
Carrier-Class Design
Engineered for 24/7 operation in central offices or harsh field conditions with a durable chassis, redundant power supply support, and efficient thermal design.
Layer 2/3 Switching & Routing
Advanced switching and routing protocols including VLAN, QinQ, STP, IGMP Snooping, OSPF, RIP, and static routing for seamless integration into existing networks.
High Performance & Scalability
Supports non-blocking switching capacity and high throughput with robust traffic shaping and QoS for voice, video, and data services.
Integrated Management
Offers centralized management via CLI, Web UI, SNMP, and EMS (Element Management System). Remote management of ONTs and fault monitoring enhances operational efficiency.
Technical Specifications
| Specification | Details |
|---|---|
| GPON Ports | 20 |
| Uplink Interfaces | 4 x 10GE SFP+, 12 x GE SFP |
| Subscriber Capacity | Up to 2,560 (1:128 split per port) |
| Switching Capacity | ≥ 200 Gbps |
| Forwarding Rate | ≥ 148.8 Mpps |
| PON Standard | ITU-T G.984/G.988 |
| PON Port Speed | Upstream 1.25 Gbps / Downstream 2.5 Gbps |
| Layer Support | Layer 2/3 |
| VLAN Support | IEEE 802.1Q, QinQ, GVRP |
| Routing Protocols | OSPF, RIP v1/v2, Static Routing |
| Management Interface | CLI, Telnet, SNMP, Web GUI, EMS |
| Power Supply | AC 100–240V or DC -48V (optional dual PSU) |
| Dimensions | Compact 1U/2U Rack-mountable Design |
| Operating Temperature | 0°C to 50°C |
| Redundancy | Hot-swappable power and fan modules (optional) |
Application Scenarios
FTTH/FTTB/FTTx Networks
Delivers triple-play services to residential or commercial buildings, including high-speed broadband, IPTV, and VoIP over a unified fiber infrastructure.
Campus & Enterprise Networks
Facilitates high-density user access across educational institutions, hospitals, hotels, and business parks.
Smart City Infrastructure
Supports smart city use cases like surveillance, traffic control, environmental sensors, and centralized management.
ISPs and Telecom Operators
Enables service providers to roll out reliable, scalable fiber broadband networks to compete in urban and suburban markets.
Benefits
High Port Density: 20 GPON ports in a compact form factor reduces rack space and infrastructure cost.
Flexible Deployment: Variety of uplink options including 10GE and GE SFP for adaptable network design.
Easy Management: Multiple management interfaces streamline setup, maintenance, and troubleshooting.
Energy Efficient: Intelligent power and fan management ensure low energy consumption and operational savings.
Future-Proof: Designed for expanding customer bases and growing bandwidth demands in next-gen broadband ecosystems.
Conclusion
The GOXS-BI4312-20PON+++ GPON OLT is an exceptional solution for high-capacity fiber access deployments. Whether you are expanding existing networks or building new FTTH/FTTx infrastructure, this device offers scalability, high reliability, and advanced features to ensure superior service delivery. It stands out with its robust build, excellent performance, and ease of management, making it a preferred choice for network operators aiming to meet the evolving demands of digital connectivity.
