DSL Circuit Emulation for G.703 and Nx64k over Ethernet
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Solution Overview
Problem
The high cost and limited availability of leased lines for connecting different locations for telephone, internet, or data services, particularly for protocols like G.703 and Nx64k, restricts cost-effective and widespread connectivity across varying geographical and technological standards.
Innovation Solution
A digital subscriber line (DSL) unit with multiple user ports configured for different protocols (Ethernet, Nx64k, G.703) and a processing device that analyzes signals to route data through emulated circuits over Ethernet or DSL ports, enabling cost-effective and flexible connectivity by emulating G.703 or Nx64k circuits over Ethernet networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If leased lines are used to connect different locations for telephone, internet, or data services, then reliable communication services are provided, but significant cost is incurred by organizations
Solution Approach 1:
The patent creates virtual copies of leased line circuits using Ethernet networks. The circuit emulation system generates virtual circuit instances that replicate the functionality of physical leased lines, allowing organizations to obtain reliable communication services through software-based emulation rather than expensive physical infrastructure
Solution Approach 2:
The DSL unit is designed to support multiple protocols (Ethernet, T1, E1, Nx64k, G.703) and can emulate various circuit types through a single device. This multi-functional capability allows the system to replace multiple specialized leased line services with one universal platform, reducing overall costs while maintaining service reliability
2Reliability
If leased lines are used to connect different locations, then dedicated communication services are provided, but limited availability is experienced where leased lines are not accessible
Solution Approach 1:
The patent introduces an Ethernet network as an intermediary medium between remote locations. Instead of requiring direct physical leased line connections between every pair of locations, the system uses Ethernet networks as a mediating infrastructure to establish virtual circuit connections, greatly expanding service accessibility while maintaining dedicated connection characteristics
Solution Approach 2:
The system transitions from physical spatial connectivity (requiring direct physical lines between locations) to logical/virtual connectivity (establishing connections through network protocols and software). This dimensional shift from physical to logical space enables service deployment in locations where physical leased lines are unavailable
3Adaptability or versatility
If protocol-specific leased lines are deployed for different standards (G.703, Nx64k, Ethernet), then protocol compatibility is ensured, but device complexity and infrastructure requirements increase
Solution Approach 1:
The DSL unit is designed as a universal device that can handle multiple protocols (Ethernet, T1, E1, Nx64k, G.703) through a single platform. The device includes protocol-specific interfaces and a processing device that can translate between different protocols, eliminating the need for separate specialized equipment for each protocol while maintaining full protocol compatibility
Solution Approach 2:
The patent extracts protocol-specific processing functionality from separate physical devices and consolidates it into a single DSL unit. The processing device isolates and handles protocol conversion and emulation tasks centrally, simplifying the overall infrastructure by removing the need for multiple protocol-specific hardware systems
Data Source
AI summary
A digital subscriber line (DSL) unit comprises a first user port configured to communicate signals according to an Ethernet protocol and a second user port configured to communicate signals according to a second non-Ethernet protocol The DSL unit also comprises at least one DSL port configured to communicate signals according to a DSL protocol; and a processing device configured to analyze Ethernet signals received over the first user port to determine when to output data from the respective received Ethernet signals over the second user port and when to output data from the respective received Ethernet signals over the at least one DSL port. The processing device is further configured to extract data from signals received over the second user port and insert the extracted data into a corresponding Ethernet signal having a respective emulated circuit identification and to output the corresponding Ethernet signal over the first user port.