The most common and most likely answer to this crossword clue is the 11 letter word TELEPRINTER
I've seen this crossword clue in The Daily Telegraph
T
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More clues leading to the result TELEPRINTER
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TELEPRINTER mean?
TELEPRINTER noun- A combined electromechanical typewriter and printer, often with an integrated paper tape reader/printer, connected to others or to a computer via the telephone system.