A network that supports retransmissions with fixed and minimum delays includes at least first, second and third transceivers. The first transceiver transmits to the second transceiver packets comprising data of first and second data types. The second transceiver: stores the received data in a second buffer; transmits to the third transceiver, without waiting a fixed delay, successfully-received packets comprising data of the first data type, which is encoded with a first error resistance level; and transmits to the third transceiver, after waiting the fixed delay, successfully-received packets comprising data of the second data type, which is also encoded with the first error resistance level. When the second transceiver receives a retransmission request from the third transceiver, it retransmits a packet comprising data of either the first or second data types, encoded with a second error resistance level that is higher than the first error resistance level.