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TIA-504 Revision A, February 1, 1998 Telecommunications - Telephone Terminal Equipment - Magnetic Field and Acoustic Gain Requirements for Handset Telephones Intended for Use by the Hard of Hearing
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Description / Abstract: This Standard defines magnetic field requirements for all handset telephones intended to couple magnetically with hearing aids.
This Standard also covers requirements for receive-amplified handset telephones intended for use by the hard of hearing.
This Standard does not cover other devices for the hard of hearing to use the telephone network.
This Standard also covers requirements for receive-amplified handset telephones intended for use by the hard of hearing.
This Standard does not cover other devices for the hard of hearing to use the telephone network.