Slide 13 of 46

Hearing Aid Compatibility

1973 – David and Reba Saks form “Organization

for Use of the Telephone” for universal telephone

compatibility

  • 1974 – AT&T and GTE agree to provide HAC on coin phones and to provide compatible handsets upon request.

  • “LC”-type handset developed

  • Blue grommet used for coin phones to indicate HAC

  • Residential and business phones still not HAC