PNWDigital’s DMR repeaters are connected by IP network connection to “c-Bridges” or conference bridges. These are computers that provide the backbone to manage up to 50 repeaters per (c-Bridge). Each c-Bridge can be connected to other c-Bridges or other types of digital networks such as Brandmeister.
An example would the hub, spoke and wheel system; a repeater is one of the spokes, the c-Bridge is the hub of the wheel and with 4 wheels you have the transport wagon (network). There is no practical limit to the number of repeaters, c-Bridges and networks that can be connected.
The public “Internet” is the typical IP connection just like you have at home or work but also used are cellular, microwave and WAN’s, depending on availability at repeater sites.