電文 is read as でんぶん (dembun) and means telegram.
でんぶん
dembun
でんりょく
electric power
でんつうだい
University of Electro-Communications
でんどう
electrically powered
でんしこうがく
electronic engineering
でんわぐち
making a telephone call
でんこう
electric works (following company name)
でんそう
electronic transmission (of data)
ほんぶん
text (of a book, document, etc.)
さくぶん
formal writing with little real meaning
ちゅうもん
order (for an item)
えいぶん
English literature
じんぶん
humanity