@Sanshine
Hello San,
Absolutely, it is possible to add a message before ending a call due to exceeding the maximum duration. You can implement a feature in your voice application that detects when the call is approaching the maximum duration and then plays a pre-recorded message to the user before the call ends.
To achieve this, you would typically set up a timer or counter within your application that tracks the call duration. When the call duration nears the maximum limit, your application can trigger an action to play the message you've described.
If you need assistance with implementing this feature or have any other questions, please let me know!