Made an off-peak call (8)
I believe the answer is:
yodelled
'made an off-peak call' is the definition.
The definition and answer can be both to do with communicating as well as being past participle verbs.
Perhaps you can see a link between them that I can't see?
'made an off-peak call' is the wordplay.
I cannot quite see how this works, but
'made' could be 'led' (leading is a kind of making) and 'led' is located in the answer.
'call' could be 'yodel' (yodel is a kind of call) and 'yodel' is found in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for yodelled that I've seen before include "Sang like Frank Ifield" , "Gave voice" , "Sang like a Swiss" .)