Analog Allstar-like “emulation”

[KN4MSH]

COS Connector Use

Hi has anyone utilised the COS Pin on the Board to maybe invoke a VOX PTT function and Make this work with Allstar ?.. I am going to guess its PTT High but was looking to see if the COS could be used to Drive a PTT when Audio is Received or if additional Components would be required. I also realize that any warranty potentially goes out the Window Thanks Rob