Question: PTT from bash shell

[mcividino]

I want to control the PTT through a zigbee switch connected to a home automation server using zigbee2mqtt.
The idea would be to install the mosquito_sub package in the Raspberry Pi to subscribe to the button topic and, if button press is detected then activate or deactivate the PTT from command line.

Is there a shell command that would switch or toggle PTT? I will implement the rest via bash script.

Thanks in advance.