Answer: pagers

AnswerCrossword Clue
PAGERS

Logan or LAX callers

PAGERS

Belt beepers

PAGERS

The first ones were introduced in 1950 by physicians in the New York City area

PAGERS
Message receivers
PAGERS
Locating devices
PAGERSElectronic clip-ons
PAGERSBeeping devices
PAGERSClip-on communicators
PAGERSClip-on devices
PAGERSCell-phone predecessors
PAGERSClip-on beepers
PAGERSDoctors' beeping clip-ons
PAGERSOn-call doctors' devices
PAGERSVocal bellboys.
PAGERSCommunication devices
PAGERSThey let you know you're wanted
PAGERSItems on belts
PAGERSOn-call gizmos
PAGERSMotorola products
PAGERSThey may interrupt meetings
PAGERSObsolescent communication devices
PAGERSCells displaced them
PAGERSUsed by record execs in the '90s
PAGERSAnnoyances in the theater
PAGERSBeepers
PAGERSCellphone forerunners
PAGERSForerunners of cellphones
PAGERSObsolescent communications devices