Rod on newspaper that supports a communication network (9,4)
I believe the answer is:
telegraph pole
'that supports a communication network' is the definition.
(a telegraph pole is part of a telegraph network)
'rod on newspaper' is the wordplay.
'rod' becomes 'pole' (pole is a kind of rod).
'on' says to put letters next to each other.
'newspaper' becomes 'telegraph' (the Daily Telegraph is a newspaper).
'pole' after 'telegraph' is 'TELEGRAPH-POLE'.
(Other definitions for telegraph pole that I've seen before include "Supporter of wires" , "support for pre-wireless communications" , "that holds up lines of communication" , "Support for telephone wires" , "Post by a street (in another paper?)" .)