Data buffer
A data buffer was a piece of communications technology.

In 2151, Captain Jonathan Archer told Ensign Travis Mayweather to see if the data buffer of the communications tower at the Terra Nova colony was still intact. Later, he told Sub-commander T'Pol and Ensign Hoshi Sato to work on the data buffer and retrieve any transmissions sent by checking the transmission logs. ()

In 2376, Captain Kathryn Janeway noticed that Commander Chakotay activated the data buffer when the two entered cargo bay two. ()
Communications technology