Crossword Genius

He slept terribly, interrupted by one's calls (10)

Ross

I believe the answer is:

telephones

'calls' is the definition.
('telephone' can be a synonym of 'call')

'he slept terribly interrupted by one's' is the wordplay.
'terribly' is an anagram indicator.
'interrupted by' indicates putting letters inside.
'he'+'slept'='heslept'
'heslept' with letters rearranged gives 'telephs'.
'telephs' going around 'one' is 'TELEPHONES'.

(Another definition for telephones that I've seen is " Calls".)

I've seen this clue in The Telegraph.
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