I am using VoIP at home. I have connected three phones to the VoIP network, one in my bedroom, one in the kitchen and one upstairs. I am using it for 2 -3 three years. Last day on, we are getting disconnected from the network intermittently. I checked the cables and the phone. The problem doesn't seem to be the network either. The phone adapter router is not working well. It gets cut off and when I reconnect, the adapter shows the signals. The adapter is Linksys https://www.acanac.com/hardware/linksys-spa2102/ which was supplied by the ISP Acanac. I would like to know what is causing the issue and if possible repair it. Please share your suggestions.
Thank you.