ANSI/TIA/EIA 504-A-1997
Magnetic Field Intensity Criteria for Telephone Compatibility with Hearing Aids

Standard No.

ANSI/TIA/EIA 504-A-1997

Release Date

1997

Published By

American National Standards Institute （ANSI)

Latest

ANSI/TIA/EIA 504-A-1997

Scope

This proposed standard provides requirements for handset telephones intended for use with hearing aids and for receive-amplified handset telephones intended for use by the hard of hearing. The receive-amplified handset telephones are intended for direct coupling to the ear or for acoustic and/or magnetic coupling to hearing aids.

ANSI/TIA/EIA 504-A-1997 history

• 1997 ANSI/TIA/EIA 504-A-1997 Magnetic Field Intensity Criteria for Telephone Compatibility with Hearing Aids