A system includes a networking enabled system and a packet radio system. The packet radio system includes a wireless interface and a packet interface. The packet interface includes at least two queues, each queue configured to store a certain class of packets of Ethernet. A cable is operative to transport the packets from the networking enabled system to the packet interface using Ethernet signaling. The packet interface is configured to ascertain from time to time the rate at which the packets are sent from the queues over the wireless interface, and according to the rate, indicate dynamically to the network enabled system the classes of packets for which packets are to be sent over the cable for storage in the appropriate queues. The network enabled system is configured to send, over the cable, packets of classes indicated by the packet interface, while holding back other packets.