HAO R P,ZHOU J,BAI X,et al. Design and optimization of an intelligent voice outcall system based on FreeSWITCH[J]. Microelectronics & Computer,2024,41(7):110-118. doi: 10.19304/J.ISSN1000-7180.2023.0530
Citation: HAO R P,ZHOU J,BAI X,et al. Design and optimization of an intelligent voice outcall system based on FreeSWITCH[J]. Microelectronics & Computer,2024,41(7):110-118. doi: 10.19304/J.ISSN1000-7180.2023.0530

Design and optimization of an intelligent voice outcall system based on FreeSWITCH

  • As the current mainstream telephone softswitch platform, FreeSWITCH is an important part of the call center and realizes mutual dial-up calls between network clients, analog phones, and mobile phones. Based on the FreeSWITCH softswitch platform, the outbound conversation flow control scheme is designed, which realizes the flow control between speech recognition, speech synthesis, and natural language processing, and supports functions such as voice intelligent interrupt broadcast, button detection, call status detection, and manual transfer, covering a comprehensive human-machine dialogue interaction process event response; improving Unimrcp's voice activity detection method, improving the accuracy of effective sound detection, integrating speech recognition and speech synthesis capability interaction logic through the Unimrcp architecture, and improving user experience. At the same time, it optimizes the function of FreeSWITCH intelligent outbound call interruption, which effectively solves the problem of interruption in the outbound call interaction process when the network is abnormal.
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