Have PBX running with several phone sets on a bridge network. My internet connection occasionally goes down so want to have a phone line (POTS line) back up that will switch over automatically when the PBX loses connection with the remote SIP server. Need calls in and out.
Thinking about using the HT-813 to connect the phone line to the PBX but need some help with the 813 configuration. Not sure what is needed - Please help. Thanks