FTTO Switch Expansion Module for Cable Duct Installation
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Solution Overview
Problem
Existing FTTO switch installations face limitations in providing additional user ports without increasing costs and complexity, as adding a second switch requires additional infrastructure and configuration, and industrial Ethernet switches are not compatible with FTTO networks due to form factor and flexibility issues.
Innovation Solution
A communication apparatus comprising a switch with an expansion module connected via a cable, providing additional user ports without the need for a separate power supply or network configuration, allowing for flexible installation and reduced costs by utilizing the existing switch's resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a second FTTO switch is added to provide more user ports, then the number of available ports increases, but the cost, complexity, and installation requirements increase significantly
Solution Approach 1:
The device is segmented into a main FTTO switch and a separate expansion module. The expansion module contains only the necessary components (ports and basic connectivity) to provide additional user access, while relying on the main switch for intelligence and network management. This segmentation allows port expansion without duplicating the entire switch system.
Solution Approach 2:
The intelligent switching functionality and network management capabilities are extracted from the expansion module and kept exclusively in the main FTTO switch. The expansion module is reduced to a simple port interface device that does not require independent configuration, IP addressing, or integration with the network management platform.
2Quantity of substance
If an industrial Ethernet switch with expansion module is used, then additional ports are provided, but the device does not fit into cable ducts and requires housing-to-housing connection
Solution Approach 1:
The expansion module is designed with local quality suitable for cable duct installation - a compact form factor that fits within the confined space of cable ducts, and a connection method (connection cable) that is appropriate for this specific installation location rather than requiring housing-to-housing docking.
Solution Approach 2:
A connection cable serves as an intermediary between the main switch and the expansion module, replacing the direct housing-to-housing connection. This intermediary allows flexible positioning and installation in cable ducts while maintaining reliable communication between the two components.
3Quantity of substance
If industrial Ethernet switches are used with expansion modules, then additional ports are available, but separate power supply and configuration are required
Solution Approach 1:
The expansion module is merged with the main FTTO switch in terms of power supply and network management. The main switch provides power to the expansion module through the connection cable, and the expansion module is managed through the main switch's interface. This merging eliminates the need for separate power supplies and configuration procedures.
Solution Approach 2:
The expansion module is designed to be self-sufficient in terms of power (receiving it through the connection cable from the main switch) and self-configuring (automatically integrated with the main switch without requiring separate IP addressing or platform integration). This reduces installation and configuration time significantly.
Data Source
Figure 1~2B
Figure 3A~3C
AI summary
A communication apparatus (200) comprising a switch (201) having a form factor adapted to the housing, for instance a cable duct. The switch is provided with at least one uplink port configured to realize a fiber optic connection to a communication network. The switch (201) has a given number of user accessible downlink ports (108) each enabling connecting a user device. The communication apparatus further comprises an expansion module (202) that is arranged separately from the switch in the housing and connected to the switch with a connection cable (204). The expansion module (202) provides additional user accessible downlink ports (108) each enabling connecting user devices.