When an enterprise’s wired main link becomes unavailable due to various reasons, how can rapid switching and remote operations and maintenance (O&M) be achieved through 4G/5G wireless backup? This article details the solution’s core capabilities, typical scenarios, and implementation results.

In telecom operator sales and O&M work, line issues are almost a daily routine. For enterprises that rely on stable networks to conduct business, line issues pose not only a technical challenge for the O&M team, but more importantly, a risk of lost sales and customer churn:

• Impending Orders at Risk: A customer is ready to place an order, but the delivery time for the local line installation cannot meet their required deadline, putting the order at risk of being lost.
• Indefinite Repair Times: An existing line is severed because municipal roadwork or other construction dug up the local fiber optic cable. On one hand, the customer is constantly complaining about poor line quality affecting their business; on the other hand, the restoration time for the cut cable seems endless, causing a massive headache for the O&M account manager.

Of course, the scenarios of line unavailability faced in actual work go far beyond these. Is there a solution that can both quickly provision services when lines are not yet ready, and automatically take over during line failures? The CBC eNet Connect 4G/5G backup solution introduced in this article is precisely the technical path to address these and many other similar problems.

Solution Overview

CBC eNet Connect builds a cost-effective enterprise-grade connectivity solution by integrating private and public network resources. Relying on the CBC eNet network, the solution provides enterprises with cross-network secure data transmission and high-performance routing services.

This article focuses on the 4G/5G backup solution within CBC eNet Connect. As a crucial high-availability component of CBC eNet Connect, it provides enterprise branches with a redundant architecture consisting of a wired main link + 4G/5G wireless backup. This achieves second-level automatic failover, guarantees high business availability, and meets the management needs of Zero-Touch Provisioning (ZTP) and centralized monitoring.

By installing 4G/5G SIM cards into eNet ECE devices and rapidly deploying them to customer sites, the solution establishes a connection from the customer site to the backbone network via 4G/5G networks. This enables rapid deployment of the customer’s network services, avoiding issues caused by local line failures or delivery delays.

In addition, it can also be used for out-of-band data management of ECE devices and as a backup line for Dedicated Internet Access (DIA) lines, serving multiple purposes depending on the application scenario.

Main Functions and Core Capabilities

• Intelligent Failover and Failback: Real-time monitoring of main link latency, packet loss, and connectivity. It automatically switches to 4G/5G when anomalies occur and automatically switches back once the main link recovers, preventing frequent network flapping. It also supports manually locking the 4G/5G link for maintenance purposes. The 4G link utilizes IPsec encryption to securely connect with the eNet network, ensuring compliance and control.
• Out-of-Band Management + Emergency Access: An independent 4G/5G channel is used for remote device management, configuration, upgrades, and troubleshooting, ensuring maintenance is possible even if the main link is disconnected. For new store openings or temporary office scenarios, 4G/5G can be used as the primary link to get online quickly, and then switched after the wired line deployment is completed, thereby shortening the opening cycle.

Deployment and Management (Simplified O&M)

• Zero-Touch Provisioning (ZTP): ECE devices automatically register and obtain configurations upon powering up, going online within 5 minutes without the need for an on-site engineer.
• Centralized Monitoring: A unified portal allows users to view 4G/5G signal strength, speed, traffic, switching logs, and link quality, while supporting remote troubleshooting and firmware upgrades.
• Real-Time Alerts: When 4G/5G signals are weak, disconnected, switched, or experience abnormal traffic, real-time alerts are sent to customers via Email + Enterprise WeChat, achieving proactive warnings.

Typical Application Scenarios

• Retail Chains: Store payment and cashier operations are extremely sensitive to network interruptions. When a store’s wired line fails, it automatically switches to 4G/5G to ensure uninterrupted transactions. New stores can also use 4G/5G to open quickly and switch back once broadband is available.
• Enterprise Branches: Using fiber or broadband as the main link and 4G/5G as the backup to guarantee business continuity.
• Cross-Border Offices: When enterprise headquarters and branches access business systems or cloud services across borders, standard internet links often suffer from high latency and severe packet loss. Through cross-border optimization using 4G + the eNet network, latency and packet loss rates can be significantly reduced, improving the network user experience.

Solution Value

• High Reliability: Second-level 4G/5G backup + intelligent switching effectively eliminates the risk of wired disconnection, safeguarding business continuity.
• Cost Reduction and Efficiency Increase: Replacing expensive traditional redundant lines with 4G/5G backup; minute-level deployment reduces O&M manpower.
• Agility and Flexibility: Plug-and-play 4G/5G allows new stores or emergency scenarios to go online quickly, shortening the service provisioning cycle.
• Global Optimization: Cross-border traffic travels through the CBC eNet backbone transport, significantly enhancing the international access experience and supporting global business expansion.

Customer Case Study

A customer used an MPLS network to interconnect various branch offices and faced the following challenges: MPLS is highly expensive and lacks effective backup and management tools. When the main link failed, they had to contact the vendor to open a trouble ticket, and resolution times ranged from hours to days, severely impacting business operations.

After adopting the CBC eNet Connect 4G/5G backup solution, Branch offices now use existing fiber or broadband as the main link, with 4G serving as a high-availability backup line. Meanwhile, the 4G channel independently functions as an out-of-band management interface, ensuring remote O&M is available even during a network outage.

Implementation Results: Total Cost of Ownership (TCO) for the network was reduced by approximately 40% to 50%. The second-level 4G switching guaranteed uninterrupted business operations, remote O&M was fully realized, and the number of required on-site support visits decreased by about 90%.

Summary

Through its primary-backup redundant architecture, second-level automatic failover, and out-of-band management capabilities, the CBC eNet Connect 4G/5G backup solution effectively mitigates the risk of wired line unavailability during both the delivery and operational phases. This solution is ideal for enterprises with stringent network stability requirements, particularly for sites where wired lines are not yet available or prone to interruptions, and for branch offices lacking local IT support. For network planners and O&M personnel, it provides a practical, high-availability tool featuring rapid deployment, centralized monitoring, and security compliance.