Remote crewmen on Egypt's borders (7)
I believe the answer is:
handset
'remote' is the definition.
(handset can mean a remote control)
'crewmen on egypt's borders' is the wordplay.
'crewmen' becomes 'hands' (hand can mean an employee on a ship).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'borders' suggests removing the centre (only the edge or border letters remain).
'egypt' with its centre taken out is 'et'.
'hands'+'et'='HANDSET'
(Other definitions for handset that I've seen before include "Shed tan (anag.)" , "Phone receiver" , "Part of a telephone" , "controller" , "part of phone" .)