Trunking allows networked matrices to be tied together seamlessly. A central node, the Trunkmaster, finds the best possible path for each audio connection, from the originating matrix to its destination, and possibly traversing another matrix on the way. This increases the network availability and allows for more efficient use of transmission resources. The largest trunked network in the world – a major US broadcaster – has been using RTS Trunking for two decades. A trunked network can be expanded virtually without limits: Trunking can grow up to 225,000 ports and is supported by all RTS matrices.