Answer:

redials

Answer	Crossword Clue
REDIALS	Tries to reach again, old-style
REDIALS	Tries the call again
REDIALS	Works the phone again.

REDIALS	Phones again.
REDIALS	Tries again (after wrong number).
REDIALS	Corrects a wrong number
REDIALS	Punches a new number in
REDIALS	Tries to get through anew
REDIALS	Calls up again
REDIALS	Responds to a busy signal