Provides solutions for integrating virtual and physical lines to assist managers in integrating multiple lines, establishing virtual connection bandwidth between different physical offices, and improving the speed, stability and quality of critical traffic delivery. When a line failure occurs, AgileLink will automatically select a line with better quality for data transmission, ensuring that when the fault is transferred, even if the user is using an Internet phone call, there will be no interruption or delay. AgileLink has line Status detection function, when the line status is abnormal, AgileLink will automatically direct the traffic of the service to the normal status line to prevent service interruptions from causing business operation losses. Through the technical integration of domain name resolution and line status detection, it can effectively maintain the business Continuing operation of the Service.