Get a different route and means of access (7)
I believe the answer is:
gateway
'means of access' is the definition.
(I've seen this in another clue)
'get a different route' is the wordplay.
'different' indicates anagramming the letters (letters placed in a different order).
'route' becomes 'way' (way is a kind of route).
'get'+'a'='geta'
'geta' anagrammed gives 'gate'.
'gate'+'way'='GATEWAY'
'and' acts as a link.
(Other definitions for gateway that I've seen before include "Yet a wag, strangely, could provide an entrance" , "Getaway (anag.)" , "Closable opening" , "Connection between two networks" , "Means of entry" .)