FCC Record, Volume 26, No. 19, Pages 14991 to 15893, October 24 - November 10, 2011 Page: 14,992
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compatible for inductive coupling if it meets a rating of at least T3. The 2007 ANSI Standard specifies
testing procedures for determining the M-rating and T-rating of digital wireless handsets that operate over
air interfaces"' that, at the time it was promulgated, were commonly used for wireless services in the 800-
950 MHz and 1.6-2.5 G H z bands.
3. When service rules were established for the 700 MHz band, the Commission stated its
expectation that hearing aid compatibility standards would be developed for that band.7 It encouraged
ASC C63" and others to work together to develop such standards in a timely manner. ASC C63" recently
adopted an updated version of the standard, the 2011 ANSI Standard, which includes the 700 MHz band
as well as other new frequencies and technologies. The new standard was published on May 27, 2011.
ASC C63" has requested the Commission to adopt this newer version of the standard.9 Some of the
features of the 2011 ANSI Standard that are different from the 2007 ANSI Standard include:'"
* The operating frequency range for wireless devices covered by the standard has been expanded to
698 MHz - 6 GHz."
wireless phone. A sum of 4 indicates that the wireless phone will be usable; a sum of 5 indicates that the wireless
phone will provide normal use; and a sum of 6 or greater indicates that the wireless phone will provide excellent
performance with that hearing aid. See Accredited Standards Committee C63" - Electromagnetic Compatibility,
American National Standard Methods of Measurement of Compatihility between Wireless Communications Devices
and Hearing Aids, ANSI C63.19-2007 (June 8, 2007) at 5 ("2007 ANSI Standard").
4 Hearing aids operating in inductive coupling mode turn off the microphone to avoid amplifying unwanted ambient
noise, instead using a telecoil to receive only audio signal-based magnetic fields generated by inductive coupling-
capable telephones. The hearing aid converts these fields back to sound or a signal appropriate for cochlear implant
47 C.F.R. 20.19(b)(2)(ii). Handsets are rated from TI to T4 for inductive coupling capability in a similar manner
to the M-ratings.
The term air interface refers to the technology that ensures compatibility between mobile radio service equipment,
such as handsets, and a service provider's base stations. Currently, the leading air interfaces include Code Division
Multiple Access (CDMA), Global System for Mobile Communications (GSM), Integrated Digital Enhanced
Network (IDEN), and Wideband Code Division Multiple Access (W-CDMA). W-CDMA is also known as
Universal Mobile Telecommunications System (UMTS).
See Service Rules for the 698-746, 747-762 and 777-792 MHz Bands, WT Docket No. 06-150, Report and Order
and Further Notice ofProposed Rulenmaling, 22 FCC Red at 8064, 8120 '1 148 (2007).
See Accredited Standards Committee (C63" Electromagnetic Compatibility, A4mertman National Standard
Methods of M/ Lleasurement /of Compatihitlit.' between t'ire/e.sU / C('ssommu 'ation DD'lvices and Hearing Aids, ANSI
C63.19-201 1 (May 27, 201 1). The standard is available For purchase from IEEE Operations Center, 445 Hoes Lane,
Piscataway, NJ 08854-4141, by calling (732) 981-0060. or going to http.//www.icee.org. A copy of the standard is
also available for Inspection at the Federal Communications Commission (FCC), 445 12th St., SW., Reference
Information Center, Room CY-A257, Washington, DC 20554.
USee Supplemental Report and Commcnts of ANSI ASC C63", WT Docket Nos. 07-250, 01-309, 06-150, at 3 (J.lune
24, 20 11) (ASC C63" Supplemental Report).
SIn addition, the 2011 ANSI Standard makes certain changes to the ticilds tested tbr RF intcrfrence reduction and
to the test procedures for inductive coupling compatibility
See 2011 ANSI Standard at 13.
Federal Communications Commission
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United States. Federal Communications Commission. FCC Record, Volume 26, No. 19, Pages 14991 to 15893, October 24 - November 10, 2011, book, November 2011; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc133013/m1/16/: accessed January 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.