Tpf-tools are used to establish bi-directional, low-latency, multichannel audio transmission between two or more geographically distant locations. The tool set consists of a server part (the tpf-server) and a client part (the tpf-client) and is heavily inspired by the JackTrip utility. It is based on the same protocol. It facilitates the handling of many concurrent audio transmissions in setups with more than two endpoints. Also, it eliminates the requirement of one endpoint having a public IP address or port forwarding configuration.