Transmission block


In telecommunications, the term transmission block has the following meanings:
  1. A group of characters or bits transmitted as a block, unit, message, or packet. It usually includes additional encoded characters for error detection and correction.
  2. In data transmission, a group of records sent, processed, or recorded as a unit.
Some protocols require each transmission block to end with an end-of-message marker. This is often a control character such as End-of-Text, End-of-Transmission-Block, or End-of-Transmission.
Some protocols require each transmission block to begin with a Start-of-Text character.