Do they speak your name on the telephone? (7)
I believe the answer is:
callers
'do they speak your' is the definition.
The definition suggests an adverb but the answer is not.
'name on the telephone?' is the wordplay.
'name' becomes 'ers' (I can't explain this - if you can you should give a lot more credence to this answer).
'on' says to put letters next to each other.
'the telephone?' becomes 'call' (call is a kind of telephone).
'ers' after 'call' is 'CALLERS'.
Can you help me to learn more?
(Another definition for callers that I've seen is " Visitors".)