Abstract: An analog and digital communication system establishes a connection between a plain old telephone service (POTS) device and a destination device. The system includes a customer appliance that includes multiple ports, an internal power source device, a subscriber identification module (SIM) card, an electronic control unit, an analog to digital convertor, and a processor device. At least one of the ports are operably connected to the POTS device. A controller communicates remotely with the customer appliance via the network to provide routing of the telephone call between the POTS device and the destination device. The controller is configured to at least one of transmit the telephone call or receive the telephone call via a closest public switched telephone network (PSTN) handoff or via an internal customer appliance network establishing a connection between the customer appliance and a second customer appliance.