Answer:

mabell

Answer	Crossword Clue
MABELL	Telephone name
MABELL	Nickname for a telecom conglomerate
MABELL	Old phone-company name

MABELL	Parent company?
MABELL	Old phone company, figuratively
MABELL	"She" got broken up in 1984
MABELL	Old phone company nickname
MABELL	Phone company "parent," once
MABELL	The phone company personified
MABELL	Quaint nickname for the phone company
MABELL	Target of a 1984 breakup

MABELL	Pre-1985 communications nickname
MABELL	Big name in telephony
MABELL	Old phone-company nickname
MABELL	Former phone-company nickname
MABELL	Monopoly figure of yore
MABELL	Name in a 1984 breakup
MABELL	Name for phone co.
MABELL	Onetime phone company sobriquet

MABELL	Benevolent monopoly, once
MABELL	Old phone company sobriquet
MABELL	Old name for the phone company
MABELL	Principal in a well-publicized breakup
MABELL	Parent of Ameritech, Nynex, etc.
MABELL	Onetime phone company nickname
MABELL	Nickname for an old monopoly
MABELL	One-time monopoly, familiarly

MABELL	Old phone monopoly personified
MABELL	Telephone company, informally
MABELL	Nickname in a newsworthy 1984 breakup
MABELL	Bygone phone company, familiarly