> For the complete documentation index, see [llms.txt](https://v5cookbook.denovolab.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://v5cookbook.denovolab.com/first-time-setup/extend-call-duration.md).

# Set Min Call Duration

Introduction

It is a common requirement to set a minimum duration in the outbound vendor trunk.  In Class 4, you can manipulate the Min Call Duration within each Vendor Trunk setting:

![](https://2160858555-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MYRPW5mw1EmjxhpuA4p%2F-MYX34VHC8TjCR0VfdnL%2F-MYX3vQCoP6kkHLS94if%2Fimage.png?alt=media\&token=c0d333b1-3991-4bd7-b71d-79de00dbcfc6)

At the bottom of the Egress Trunk page, you can expand on the "Timeout Setting" section and configure these values.