Information For Customers That Are Deaf Or Hard Of HearingWireless Telephones
The Hearing Aid Compatibility Act of 1988 (HAC Act) generally required that the Federal Communications Commission (FCC) ensure that telephones manufactured or imported for use in the United States after August 1989, and all “essential” telephones, are hearing aid-compatible. When Congress passed the Act in 1988, it specifically exempted “telephones used with public mobile services” (wireless telephones) from these requirements. To ensure that the HAC Act kept pace with the evolution of telecommunications, however, Congress granted the FCC a means to revoke or limit the exemption for wireless telephones. On August 14, 2003, the FCC determined that continuation of a complete exemption for wireless telephones would have an adverse effect on individuals with hearing disabilities, and that limiting the exemption was technologically feasible and in the public interest. Based upon these findings, the FCC established rules for the hearing aid compatibility of digital wireless phones.
What Makes a Phone Hearing Aid Compatible?
Hearing aids operate in one of two modes – acoustic coupling or telecoil (inductive) coupling. Hearing aids operating in acoustic coupling mode receive and amplify all sounds surrounding the user; both desired sounds, such as a telephone’s audio signal, as well as unwanted ambient noise. Hearing aids operating in telecoil coupling mode avoid unwanted ambient noise by turning off the microphone and receiving only signals from magnetic fields generated by telecoil-compatible telephones. In the United States, about 60 percent of hearing aids contain telecoils, which generally are used by individuals with profound hearing loss.
A telecoil is a small, tightly-wrapped piece of wire inside the hearing aid that, when activated, picks up the voice signal from the electromagnetic field that leaks from compatible telephones. While the microphone on a hearing aid picks up all sounds, the telecoil will only pick up an electromagnetic signal from the telephone. Thus, users of telecoil-equipped hearing aids are able to communicate effectively over the telephone without feedback and without the amplification of unwanted background noise. Telecoils can only fit in two styles of hearing aids: “In-The-Ear” and “Behind-The-Ear” aids. Most smaller hearing aids are not large enough to fit the telecoil. Many people report feedback (or squealing) when they place a telephone next to their hearing aid. When placed correctly, telecoils can eliminate this feedback because the hearing aid microphone is turned off and the hearing aid only amplifies the signal coming through the telecoil. Some hearing aid users may need to place the telephone slightly behind the ear rather than directly over the ear to obtain the clearest signal.
A telephone that is hearing aid compatible has an internal feature that allows the use of telephone compatible hearing aids. Thus, telephones can be used effectively by persons with hearing aids
The ability to make wireless telephones compatible with hearing aids also depends in part on other technical and design choices made by carriers and manufacturers. For example, for technical reasons, it is easier to meet hearing aid compatibility standards on systems that use a Code Division Multiple Access (CDMA) air interface (including Verizon Wireless and Sprint Nextel) than on systems that use a Global System for Mobile (GSM) (such as AT&T Mobility and T-Mobile) air interface. It is also easier to meet hearing aid compatibility standards in phones with clamshell (or “flip”) designs than in “candy bar” or other styles. Therefore, consumers may generally find more models that meet hearing aid compatibility standards available from CDMA carriers and in clamshell designs.
What Are the FCC Requirements for Hearing Aid Compatibility for Wireline and Digital Wireless Telephones?
FCC rules require that phones subject to the HAC Act: (1) produce a magnetic field of sufficient strength and quality to permit coupling with hearing aids that contain telecoils; and (2) provide an adequate range of volume. FCC rules also establish technical parameters to ensure that telephones are compatible with hearing aids. FCC rules also generally require that telephones allow volume to be increased to accommodate individuals with hearing disabilities whether or not they use hearing aids. Telephones allowing high volume levels must automatically reset to a lower volume each time the handset is returned to an on-hook condition. Telephone equipment manufacturers may request a waiver permitting high volume telephones to remain at the high volume setting under certain conditions. If you need a volume higher than the 18 decibel (dB) volume limit specified in the FCC’s rules, you must reset the volume each time you use the telephone, even when you are the primary user of the telephone. Analog wireless telephones usually do not cause interference with hearing aids. Digital wireless telephones, on the other hand, sometimes cause interference because of electromagnetic energy emitted by the telephone’s antenna, backlight or other components. Therefore, the FCC has adopted specific hearing aid compatibility rules for digital wireless telephones. The standard for compatibility of digital wireless phones with hearing aids is set forth in American National Standard Institute (ANSI) standard C63.19. A digital wireless handset is considered hearing aid-compatible for inductive coupling if it meets a “T3” (or “U3T”) rating under the ANSI standard. In addition to rating wireless phones, the ANSI standard also provides a methodology for rating hearing aids from M1 to M4, with M1 being the least immune to RF interference and M4 the most immune. To determine whether a particular digital wireless telephone is likely to interfere with a particular hearing aid, the immunity rating of the hearing aid is added to the rating of the telephone. A sum of four would indicate that the telephone is usable; a sum of five would indicate that the telephone would provide normal use; and a sum of six or greater would indicate that the telephone would provide excellent performance with that hearing aid.
Are Hearing-Aid–Compatible Digital Wireless Phones Available?
To ensure that sufficient hearing aid-compatible digital wireless phones complying with the ANSI standard are available, the FCC set benchmark dates by which digital wireless handset manufacturers and service providers had to gradually increase the number of hearing aid-compatible digital wireless phones available to consumers. The currently applicable benchmarks are as follows:
For Acoustic Coupling
- Each handset manufacturer must meet at least an M3 rating for one third of the handset models that it offers to service providers per digital air interface. If one third of the manufacturer’s handset models works out to a fraction, the manufacturer may round the result down.
- Each nationwide wireless service provider (Verizon Wireless, AT&T Mobility, Sprint Nextel and T-Mobile) must meet at least an M3 rating for 50 percent or eight of the handset models it offers to consumers, whichever is less, per digital air interface. For service providers that do not meet the 50 percent threshold, the minimum number of compatible models required increased to ten on February 15, 2010.
- Each non-nationwide wireless service provider must meet at least an M3 rating for 50 percent or eight of the handset models it offers to consumers, whichever is less, per digital air interface. For service providers that do not meet the 50 percent threshold, the minimum number of compatible models required, increased to ten on May 15, 2010.
- Each handset manufacturer must offer at least two T3-rated handset models per digital air interface. In addition, manufacturers have to ensure that one third of their handset models per air interface meet at least a T3 rating. If this percentage works out to a fraction, the manufacturer may round the result down; however, any manufacturer offering four or more handset models over a digital air interface must offer at least two that meet a T3 or higher rating.
- Each wireless service provider must meet at least a T3 rating for one third or ten of the handset models it offers to consumers, whichever is less, per digital air interface.
- These numbers are minimum requirements, and manufacturers and service providers may offer more qualifying handsets if they choose. In addition, manufacturers are required to partially refresh their offerings of hearing aid-compatible phones each year, and service providers must offer a range of hearing aid-compatible phones with differing levels of functionality.
The FCC allows a “de minimis” exception to its requirements for handset manufacturers and wireless service providers offering a small number of hearing aid-compatible handsets. Under this exception:
- Wireless service providers and handset manufacturers that offer two or fewer digital wireless handsets in the U.S. for a particular air interface need not offer hearing aid-compatible handsets.
- Wireless service providers and handset manufacturers that offer three digital wireless handsets in the U.S. for a particular air interface must offer at least one hearing aid-compatible handset model.
- Since September 8, 2012, wireless service providers and handset manufacturers that are not small entities under Small Business Administration standards, and that have been offering handsets over a digital air interface for at least two years, no longer qualify for the de minimis exception. All such service providers and manufacturers will be required to offer at least one hearing aid compatible model for acoustic coupling and for inductive coupling per air interface."
Telephone manufacturers are required to clearly label their telephones and the telephone packaging containing hearing aid-compatible handsets. They must also make information available in the package or product manual, and require service providers to make the performance ratings of hearing aid-compatible telephones available. Packages containing hearing aid-compatible handsets must be explicitly labeled and must include detailed information in the package or product manual. Wireless service providers must offer a means for consumers to test hearing aid-compatible handsets in their owned or operated retail stores. Some hearing aid manufacturers are voluntarily including information about hearing aid compatibility with their products. Wireless service providers are also offering similar information in their owned or operated retail stores and are training employees to help persons with hearing aids. This information and the package labeling required by the FCC help persons with hearing aids make fully-informed decisions about purchasing their hearing aid-compatible wireless phones.
Since January 15, 2009, manufacturers and service providers have been required to post information about their hearing aid-compatible handset offerings on their websites.
Some handsets are capable of using wireless technologies, such as Wi-Fi, for which hearing aid compatibility technical standards have not yet been adopted by the FCC. If a handset includes such a technology, the packaging material and other disclosures must inform consumers that such operations have not been tested for use with hearing aids. This disclosure does not necessarily mean the phone will not be compatible with a hearing aid; it only means that these operations cannot be tested.
Below is a list of hearing aid compatible devices from StandUP Wireless:
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