The Vonage Voice API allows developers to create Interactive Voice Response (IVR) menus that capture user input with Automatic Speech Recognition (ASR). To improve the IVR experience, developers need to provide context for ASR to better understand the caller's response. However, ASR is prone to errors and can be frustrating for callers. Developers can use tools such as Vonage's speech recognition settings and NCCOs (Nexmo Call Control Objects) to track conversation history and handle repeated errors. By abstracting out repeated properties in NCCOs, developers can create lightweight error-handling endpoints that switch to DTMF or live operators when necessary. The Vonage Voice API provides a well-documented and useful experience for developers building IVR menus, with resources available for learning more and troubleshooting.