Development Scope
Device and interface access
Develop network hardware and drivers around Ethernet, 4G modules and selected systems, configure routing, DNS, access permissions and authorize VPN connections.
Product business functions
Develop router motherboard or system adaptation, Ethernet access, network management, authorized VPN access and wired/cellular failover.
Platform and data connection
Combine the business link of device and controller → collection or routing gateway → 4G link → enterprise platform → after-sales and operation and maintenance, and define the device identity, data fields, update time, abnormal status and result confirmation method.
Exception handling and operational constraints
Existing connections may be interrupted during the switch, and network recovery and application session recovery need to be verified separately; the VPN needs to be connected to an enterprise-authorized server.
Data and Operational Workflow
On-site LAN → Routing and access control → Wired or cellular egress → Enterprise business network; fault detection triggers backup link establishment.
The device side, communication side and platform side retain necessary status and logs respectively. Project integration testing is checked with actual equipment data and execution results, and network connection status and business completion status are recorded separately.
Project Inputs
- Existing device models, interface and wiring diagrams, licensing agreements, data samples and available codes.
- Business processes and parameters: LAN topology, link priority, VPN interface and business recovery time.
- Target location, operator, SIM/APN, power supply, installation method and equipment size.
- Existing platform interfaces, user roles, development modules, number of prototypes and planned nodes.
Deliverables and Acceptance
| Deliverables | Delivery content | Verification method |
|---|---|---|
| product realization | Hardware design data, prototypes or existing equipment modification data involved in the project, as well as corresponding firmware and interfaces | Check routing, DNS and access control rules. |
| Business integration testing | Data fields, status definitions, platform adaptation procedures and business integration testing records | Test main link disconnection, recovery and switching jitter. |
| Version and test data | Target hardware and software versions, build or deployment instructions, parameter configurations and test logs | Record the throughput, latency and temperature rise under the target business load. |
First confirm the scope and key functions, then complete prototype or software development, system integration testing and stage acceptance. The acceptance conditions list the prototype, version, environment, duration and passing threshold; source code, design documents, third-party licenses, materials, traffic, cloud resources and on-site work are agreed separately.
Frequently Asked Questions
Can dual-SIM cards be used to switch services without interruption?+
The dual-SIM method depends on the module and hardware. Single-standby device switching requires re-registration and connection establishment, and business recovery is also affected by the application protocol; the project should clearly allow interruption time and measure it.
Is it possible to delegate only part of the functions of an industrial router?+
The device interface, terminal program, 4G communication and platform integration testing can be split based on the existing R&D foundation. Please provide existing information and target boundaries, first check "LAN topology, link priority, VPN interface and business recovery time", and then clarify the deliverables and interface responsibilities of each module.
How are costs and cycle time assessed?+
Split the workload based on target devices, interfaces, existing data, and verification criteria. This project focuses on checking the LAN topology, link priority, VPN interface and business recovery time; when prototypes, on-site integration testing or third-party platform cooperation are required, the corresponding costs, prerequisites and nodes will be listed separately.
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