Cane table is feature of exchange (11)
I believe the answer is:
switchboard
'feature of exchange' is the definition.
(I've seen this before)
'cane table' is the wordplay.
'cane' becomes 'switch' (I've seen this before).
'table' becomes 'board' (board is a kind of table).
'switch'+'board'='SWITCHBOARD'
'is' acts as a link.
(Other definitions for switchboard that I've seen before include "Part of telecommunications network" , "Manual telephone exchange" , "Where one may see call girl" , "Manual telephone connector" , "Centre for telephone calls" .)