I've tried different star codes and I've got problems.
Example *85 for the call park and *77 I can't use them.
I'm in conversation and I type *85 or *77 and nothing happens, I just hear the DTMF tone sent, where am I wrong?
Let me explain, with IP phones everything works without typing in the star codes, I imagine that the star codes are used for the use of analog phones or otherwise without system keys.
So do they use star codes from these analog phones example *77?