Transceiver array
From Memory Alpha, the free Star Trek reference
A transceiver array was a technology used on Intrepid-class vessels in the 24th century.
In 2378, the Doctor, disguised as Captain Kathryn Janeway, sent a message from the Delta Flyer II to the USS Voyager through the ship's transceiver array, which was received by Ensign Harry Kim. (VOY: "Renaissance Man")
