Try a different power supply? Make sure it's the same voltage! And the same or higher amps/mA than the genuine power supply. If that doesn't help it sounds like you've got a faulty one
You would need one with FXO ports and another with FXS ports to be able to "extend" your analogue PBX extensions to somewhere else. But that's an awful workaround, it will be unreliable and poor audio quality. Move your entire phone system to VoIP! :)
Have you got a set up guide? Is the phone mandatory to set it up? Im just getting green flashing with an ethernet cable plugged in only and router is not showing an IP address.
Hello, I hope you are well, I have a question: what is this device for? I want to make my router that is repeating the internet in my room have a telephone, is it possible?