Zhuanzhuan Tech
Aug 23, 2023 · Backend Development
Design and Implementation of a Virtual Phone Number Service with XB and AXB Modes
This article explains the concept, practical applications, version evolution, and deployment strategy of a virtual phone number service, detailing XB and AXB binding modes, asynchronous retry mechanisms, concurrency handling, and monitoring to ensure reliable integration with third‑party PSTN providers.
AXB modeXB modeasynchronous processing
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