| Softswitch is a telephony routing technology that utilizes software on general-purpose computers,as opposed to traditional hardware-based telephone routing using dedicated hardware devices.FreeSWITCH,an open-source softswitch software widely used in the field,offers significant advantages in terms of functionality,usability,ease of installation,and single-node performance.However,the performance of a single-node FreeSWITCH is inadequate to support the normal operation of the entire system in high-concurrency scenarios.Therefore,this paper presents the design and implementation of a softswitch cluster system based on FreeSWITCH and OpenSIPS.The main contributions of this work are as follows:(1)A review of the current application of softswitch technology in call centers,including an examination of the system architecture,functional characteristics of softswitch technology,and communication protocols and standards in IP networks.(2)Addressing the call center’s requirements for call quality and concurrency in practical production environments,a design approach is proposed that distributes traffic across multiple nodes to ensure load balancing.A technical solution and device configuration for a high-concurrency,high-performance call center software system based on a softswitch cluster are presented.(3)The design and implementation of a softswitch cluster system based on FreeSWITCH and OpenSIPS are carried out,and the reliability of the proposed solution is validated.Test results demonstrate that the cluster system maintains high performance even in high-concurrency scenarios. |
