Apple E2380B Smart Cellular Telephone User Manual HAC Mode 1

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Document ID	1521756
Application ID	Rt011F5f7py9Lxyk+ZNEcg==
Document Description	HAC mode implementation
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	7.14kB (89268 bits)
Date Submitted	2011-08-11 00:00:00
Date Available	2011-11-18 00:00:00
Creation Date	2011-08-10 22:07:56
Producing Software	Mac OS X 10.6.8 Quartz PDFContext
Document Lastmod	2011-08-10 22:07:56
Document Title	HAC Mode_1
Document Creator	Pages
Document Author:	Tiberiu Muresan


Hearing Aid Compatibility
Version 1.0
August 6, 2011
Ben Juang
Sherman Jin
 Apple Confidential - Do Not Distribute - Not to be Used or Disclosed Without Permission from Apple
Copyright © 2011, Apple Inc. All rights reserved.
Overview
Hearing Aid Compatibility (also known as HAC mode) is a feature that requires digital wireless
phones to be compatible with hearing-aids as indicated in FCC’s CFR Title 47 § 20.19. This
feature is intended to ensure that consumers with hearing disabilities have reasonable access
to telecommunication services when using Apple’s iPhone 4.
HAC mode feature is part of Apple’s iOS 5.0 software release for the iPhone 4. No additional
software installation is required.
Implementation
For the iPhone 4 and iOS 5.0 software release, the HAC mode feature is enabled through the
use of a Hearing Aid Mode switch. For any “Out-of-the-box” device, the Hearing Aid Mode
switch is set to OFF. A User can always enable this feature when required.
When the Hearing Aid Mode switch is set to ON and when the device is in a normal voice
call, it will reduce the maximum transmit power by 2.5 dB in GSM operations in the 1900
MHz band.
For any emergency calls, when the Hearing Aid Mode switch is set to ON, there is no
reduction of the maximum transmit power.
The reduction of maximum transmit power in this band may affect the GSM cellular coverage
in some areas.
The Hearing Aid Mode switch can be found in the User Interface of the iOS 5.0 software
release, at the following location:
Settings --> General --> Accessibility --> Hearing Aid Mode --> On/Off
 Apple Confidential - Do Not Distribute - Not to be Used or Disclosed Without Permission from Apple
Copyright © 2011, Apple Inc. All rights reserved.

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Title                           : HAC Mode_1
Author                          : Tiberiu Muresan
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Create Date                     : 2011:08:10 22:07:56Z
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