Answer:

OPERATOR

Answer	Crossword Clue
OPERATOR	0, phonewise
OPERATOR	"Smooth .." (Sade)
OPERATOR	Switchboard overseer

OPERATOR	Connector?
OPERATOR	Phone company employee
OPERATOR	Lily Tomlin's Ernestine, for one
OPERATOR	Lily Tomlin's job as Ernestine
OPERATOR	Wheeler-dealer
OPERATOR	Smoothie
OPERATOR	"Smooth .." (Sade song)
OPERATOR	Directory Assistance person

OPERATOR	Switchboard worker
OPERATOR	Coal-mine boss.
OPERATOR	Skilled worker.
OPERATOR	Worker.
OPERATOR	Garment worker.
OPERATOR	Agent.
OPERATOR	I. L. G. W. U. member.
OPERATOR	Manager.

OPERATOR	Owner or manager of a mine, factory, etc.
OPERATOR	Girl once called "central."
OPERATOR	Machine worker.
OPERATOR	Shady business man
OPERATOR	Responder to O on the dial
OPERATOR	Someone to dial
OPERATOR	Person at the controls
OPERATOR	Lily Tomlin role in "Laugh-In"

OPERATOR	Part of B.T.O.
OPERATOR	A ham is one
OPERATOR	Mountebank
OPERATOR	Tomlin as Ernestine
OPERATOR	Tomlin's Ernestine
OPERATOR	O, on a telephone
OPERATOR	Smooth worker
OPERATOR	Numbers person

OPERATOR	Numbers person?
OPERATOR	Number finder
OPERATOR	One whose working days are numbered
OPERATOR	Zero personality?
OPERATOR	Person who's a zero?