If you are using terminal emulators like putty or kitty from windows you may have this problem that talkkonnect
does not respond correctly to functions keys F1-F4. You can set putty as the screen shot below and then ssh in again.
If you want to change keymappings in the code you can also do so but this will cause problems down the line I suggest that the problem
be solved by fixing the problem with the terminal (putty) for this case.
For http api you can use command for example http://192.168.10.3:8080/?command=F1 (the IP of the example talkkonnect is 192.168.10.3 change to your talkkonnect ip address)