Is there a way to disconnect a phone call (iPhone) without having to press the red handset on the screen?

[vbinaz]

I can start a hands-free phone call using either Siri or the car; however, I have not found anyway to hang up the call. I have to press the red handset on the screen to disconnect. Is there a hands-free way to disconnect a phone call? I have an iPhone.

 

[Sai Ko]

Click Left scroll wheel to the right to hang up