---
page_type: error
code: 64104
message: "64104: ConversationRelay: Max call duration reached"
level: ERROR
product: Programmable Voice
---

## Description

Twilio Voice has a hard limit to the length of a call, once that is reached the call is terminated.

### Possible Causes

- This call reached the maximum duration.

### Possible Solutions

- None at this moment.