This Recommendation considers networks with repeaters. A repeater is usually a device designed to receive a signal from a remote transmitter and then retransmit this signal to a remote receiver that unable to receive a signal from the original transmitter without retransmission due to certain conditions, for example, due to too large a distance, transmission medium, low power of the source signal, or other reasons. Implementation of network coding at repeater with a two-way relay channel allows to reduce the network load and, consequently, data transmission delays in such networks. This Recommendation includes: - Description of a network architecture where the protocol could be implemented. - Coding and decoding procedures. - Packet types and formats. - Signaling procedures and diagrams.