Solve the Last Bottleneck of LAN Fiber to the Desktop
——Optical Socket Switch

Addressing the Pain Points in Comprehensive Upgrade of Office Network Transmission Technology — Zhejiang Jindong Communication’s FTTD Solution

I.Key Pain Points in Office Network Transmission Technology

1. Low Transmission Efficiency

• Bandwidth Bottlenecks and Latency Issues: Traditional copper cables (e.g., 100Mbps) struggle to meet gigabit upgrade requirements, as 90% of existing cables cannot be upgraded to gigabit speeds, resulting in excessively long transfer times for large files. During cross-regional transmission, network congestion further exacerbates latency, affecting real-time services such as HD video conferences and 4K promotional videos (15G-level files).
• Shared Bandwidth Congestion: In point-to-multipoint architectures like PON, bandwidth is shared among multiple terminals. Network lag easily occurs in high-concurrency scenarios—for example, bandwidth drops sharply when an optical splitter is connected to too many terminals.

2. Prominent Network Security Risks

• Data Leakage Hidden Dangers: Public network transmissions lack encryption (e.g., emails, FTP). USB drive copying is prone to introducing viruses, and audit mechanisms are absent during file exchanges between internal and external networks. In remote work scenarios, data is transmitted over public networks with uncontrolled terminal storage, leading to a high risk of leakage.
• Unauthorized Access and Intrusion: Office networks lack access control, allowing external devices to connect to the internal network arbitrarily, which may result in the leakage of critical information.

3. High Operational Complexity and Costs

• Difficult Fault Localization: Troubleshooting faults in PON networks requires checking multiple components such as OLTs, optical splitters, and ONUs, which is time-consuming and disrupts business continuity. Upgrading traditional cabling involves large-scale cable replacement, resulting in heavy engineering workloads.
• High Dedicated Line Costs: Dedicated lines are adopted to ensure stability, but they come with limited bandwidth and high expenses, making them unable to cope with high-traffic demands.

4. Insufficient Scalability and Compatibility

• Difficulties in Upgrades and Transformations: Copper cables have distance limitations that restrict speed. Upgrading PON networks requires replacing OLT/ONU devices and re-planning network links.
• Poor Device Compatibility: For example, ONUs need to be bound to OLTs from specific manufacturers, resulting in weak interoperability across different brands.

II. Core Innovations of Zhejiang Jindong Communication’s FTTD Solution

1. Technical Architecture: End-to-End All-Optical Ethernet

• Three-Level Direct Connection Architecture (Core Layer – Convergence Point – Terminal):
  • Equipment Room End: All-optical port switches are directly connected to ODF distribution frames, eliminating convergence layer devices and reducing space occupation by 70%.
  • Terminal End: Patented product—86-type 1-fiber multi-electrical port socket transceiver (CN216959874U), supporting 1 optical port to 2/4/8 electrical ports, plug-and-play gigabit transmission, with power consumption < 3W.
  • Fiber Direct Fusion Splicing Technology: Point-to-point direct fusion between ODF ports and room optical ports, with optical loss ≤ 0.3dB/km, ensuring signal stability.

2. Improved Transmission Performance

• Exclusive Gigabit Bandwidth: The point-to-point architecture ensures each terminal has exclusive access to bandwidth, supporting instant transmission of large files (e.g., 15G promotional videos can be completed in seconds) and zero lag during HD video conferences.
• Low Latency and High Compatibility: It supports the IEEE 802.3 protocol, adapts to 10M/100M/1000M environments, and seamlessly integrates into existing Ethernet systems.

3. Security-Enhanced Design

• Physical Isolation + VLAN Logical Segmentation: Internal and external networks are physically isolated via independent optical cables, combined with VLAN for dual protection, preventing cross-regional security threats.
• Full-Process Auditing: Supports full-link monitoring of file transmissions, addressing the pain point of uncontrollable data flow.

4. Cost and Operation & Maintenance Optimization

• 40% Reduction in Construction Costs: The cost of optical fibers is only 1/10 that of copper cables; cold splicing technology shortens the construction period by 40%, and the cost for a 1,000-point scale is 30-40% lower than that of PON systems.
• Ultra-Simplified Operation & Maintenance:
  • Fault Localization: The point-to-point architecture enables quick identification of fault points (e.g., drop cables or socket transceivers), with recovery time < 10 minutes.
  • Easy Upgrades: For 10G upgrades, only optical modules and terminal transceivers need to be replaced, eliminating the need for re-wiring.

• Low Training Threshold: Traditional workers can take up their posts after 2 days of training. The maintenance rate of projects in the past decade is nearly zero (for example, the maintenance cost of Wuyi Tax Bureau in 5 years is less than 10,000 yuan)

5. Flexible Scalability and Ecosystem Compatibility

• On-Demand Terminal Configuration: Flexibly select 1-fiber 2-electrical/4-electrical/8-electrical sockets to adapt to the number of devices at different workstations.
• Open Ecosystem Cooperation: Compatible with third-party devices such as Anheng firewalls and H3C switches, avoiding vendor lock-in.
• 30-Year No Re-Wiring: 20% fiber redundancy is reserved to support smooth future upgrades to 10G/50G-PON.

III. Comparative Advantages vs. Traditional Solutions (FTTD vs PON)

IV. Practical Application Verification and Improvement Directions

1.Successful Cases

• Wuyi County Tax Bureau (5-year operation and maintenance cost < 10,000 yuan) and Wuyi Vocational School (near-zero maintenance) have verified the solution’s high reliability.
• The office network of Shenzhen Qianhai Shenzhen-Hong Kong Enterprises adopted a similar architecture, achieving high-speed cross-border transmission and receiving government subsidies.

2.Improvement Areas

• Speed Limit: Currently focused on gigabit transmission; speeds exceeding 10G depend on 50G-PON optical cables.
• Supply Chain Risks: Discontinuation of ODF accessories may affect maintenance, requiring strengthened ecosystem cooperation.

V. Conclusion: The Groundbreaking Value of FTTD