en/devices/tech/connect/emergency-affordance.html - platform/docs/source.android.com - Git at Google

 <html devsite>
   <head>
     <title>Implementing Emergency Affordance</title>
     <meta name="project_path" value="/_project.yaml" />
     <meta name="book_path" value="/_book.yaml" />
   </head>
   <body>
   <!--
       Copyright 2017 The Android Open Source Project

       Licensed under the Apache License, Version 2.0 (the "License");
       you may not use this file except in compliance with the License.
       You may obtain a copy of the License at

           http://www.apache.org/licenses/LICENSE-2.0

       Unless required by applicable law or agreed to in writing, software
       distributed under the License is distributed on an "AS IS" BASIS,
       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
       See the License for the specific language governing permissions and
       limitations under the License.
   -->


 <p>All mobile devices sold in India from January 1st, 2017 must provide a
 panic button to meet Indian Department of Telecommunications (DoT) requirements.
 To address these regulatory requirements, Android includes a reference
 implementation of the Emergency Affordance feature to enable a panic button on
 Android devices.</p>

 <p>This feature is enabled by default in Android 8.0 and higher releases, but
 must be patched into existing builds of earlier releases. Currently, this
 feature is exclusively targeted at devices sold in the Indian market but can be
 included on all devices sold throughout the world as the feature has no effect
 outside India.</p>

 <h2 id="examples-source">Examples and source</h2>
 <p>The Emergency Affordance feature is implemented in the Android Open Source
 Project (AOSP)
 <a href="https://android.googlesource.com/platform/frameworks/base/">frameworks/base</a>
 project. It is available in the master branch and is enabled by default in
 Android 8.0 and higher releases.</p>

 <p>This feature is currently available in the following branches and commits.
 This information is provided to enable device manufacturers to easily patch the
 necessary changes into their existing builds. Device manufacturers wanting to
 implement the AOSP reference emergency affordance feature can cherry-pick the
 commits from the applicable branches into their own builds.</p>

 <p class="table-caption" id="cherry-picks-reference-implementation">
 <strong>Table 1.</strong> Cherry-picks for AOSP reference emergency affordance
 feature</p>
 <table>
 <tbody>
 <tr>
 <th scope="col">Branch</th>
 <th scope="col">Commits</th>
 </tr>
 <tr>
 <td>master</td>
 <td><a href="https://android-review.googlesource.com/#/c/284723/">e0c3c66</a>
 Added Emergency affordance feature<br>
 <a href="https://android-review.googlesource.com/#/c/287188/">42a4338</a>
 Added translations for emergency action string<br>
 <a href="https://android-review.googlesource.com/#/c/286858/">4df8d64</a>
 Fixed an issue where the emergency affordance would show on tablets
 </td>
 </tr>
 <tr>
 <td>nougat-dev</td>
 <td><a href="https://android-review.googlesource.com/#/c/284761/">e6680d9</a>
 Added Emergency affordance feature<br>
 <a href="https://android-review.googlesource.com/#/c/287293/">95e1865</a>
 Added translations for emergency action string<br>
 <a href="https://android-review.googlesource.com/#/c/286953/">a70bb89</a>
 Fixed an issue where the emergency affordance would show on tablets
 </td>
 </tr>
 <tr>
 <td>marshmallow-dev</td>
 <td><a href="https://android-review.googlesource.com/#/c/284624/">cd22634</a>
 Added Emergency affordance feature<br>
 <a href="https://android-review.googlesource.com/#/c/286937/">13f51c6</a>
 Added translations for emergency action string<br>
 <a href="https://android-review.googlesource.com/#/c/287241/">6531666</a>
 Fixed an issue where the emergency affordance would show on tablets
 </td>
 </tr>
 <tr>
 <td>lollipop-mr1-dev</td>
 <td><a href="https://android-review.googlesource.com/#/c/284743/">5fbc86b</a>
 Added Emergency affordance feature<br>
 <a href="https://android-review.googlesource.com/#/c/287382/">1b60879</a>
 Added translations for emergency action string<br>
 <a href="https://android-review.googlesource.com/#/c/286856/">d74366f</a>
 Fixed an issue where the emergency affordance would show on tablets
 </td>

 </tr>
 </tbody>
 </table>

 <h2 id="implementation">Implementation</h2>
 <p>The Emergency Affordance feature makes no changes to the APIs exposed through
 the Android Software Development Kit (SDK). When enabled and activated, the
 feature provides two triggers that can initiate an emergency call to 112, which
 is the single emergency number to be used in India and mandated by the Indian
 DoT regulations.</p>
 <p>An emergency call is initiated by either:</p>

 <div style="width:80%">
 <table>
 <tr>
 <th width="50%">Long pressing the <strong>EMERGENCY</strong> button<br> on the
 lockscreen</th>
 <th width="50%">Tapping the <strong>Emergency</strong> option<br> in the
 Global Action Menu</th>
 </tr>
 <tr>
 <td style="text-align: center">
 <img src="/devices/tech/connect/images/emergency-button.png" alt="emergency
 button">
 <figcaption><strong>Figure 1.</strong> <strong>EMERGENCY</strong> button on
 lockscreen.</figcaption></td>
 <td  style="text-align: center">
 <img src="/devices/tech/connect/images/emergency-option.png" alt="emergency
 option">
 <figcaption><strong>Figure 2.</strong> <strong>Emergency</strong> action on
 Global Action Menu (accessed by long pressing the power key).
 </figcaption></td>
 </tr>
 </table>
 </div>

 <p>This feature introduces the following internal components:</p>
 <ul>
 <li>EmergencyAffordanceManager
 <pre class="devsite-click-to-copy">
 frameworks/base/core/java/com/android/internal/policy/EmergencyAffordanceManager.java
 </pre>
 </li>
 <li>EmergencyAffordanceService
 <pre class="devsite-click-to-copy">
 frameworks/base/services/core/java/com/android/server/emergency/EmergencyAffordanceService.java
 </pre>
 </li>
 </ul>

 <h3 id="EmergencyAffordanceManager">EmergencyAffordanceManager</h3>
 <p>The EmergencyAffordanceManager provides an internal API to use the Emergency
 Affordance feature. It provides methods for initiating the emergency call and
 querying at runtime if the feature should be enabled.</p>
 <ul>
 <li><code>void performEmergencyCall()</code>. Initiates an emergency call.</li>
 <li><code>boolean needsEmergencyAffordance()</code>. Determines if the feature
 should be active.</li>
 </ul>

 <p>The feature may be permanently disabled at build time by changing the
 <code>EmergencyAffordanceManager.ENABLED</code> constant to <code>false</code>.
 This will cause <code>needsEmergencyAffordance()</code> to always return false
 and prevent the <code>EmergencyAffordanceService</code> from starting.</p>

 <h3 id="EmergencyAffordanceService">EmergencyAffordanceService</h3>
 <p>The <code>EmergencyAffordanceService</code> is a system service that monitors
 the Mobile Country Code (MCC) of all the detected cellular networks and the MCC
 of the installed SIM cards. If any of the installed SIM cards or detected
 cellular networks have a MCC matching one of India's MCCs (404 or 405) then the
 feature will be enabled. This means the feature can be enabled in India even if
 no SIM card is present. It is assumed the mobile network will permit
 registration for emergency calls even without a SIM card installed. The feature
 will remain enabled until a non-India SIM is installed and none of the detected
 networks have a matching MCC.</p>

 <p>The following resources and settings affect the behavior of the Emergency
 Affordance feature. If the config type is:</p>
 <ul>
 <li><strong>Resource</strong>, it is an internal resource defined in
 <code>frameworks/base/core/res/res/values/config.xml</code>.</li>
 <li><strong>Setting</strong>, it is a setting stored in the systems settings
 provider.</li>
 </ul>

 <p class="table-caption" id="settings-affecting behavior">
 <strong>Table 2.</strong> Settings affecting behavior of emergency affordance
 feature</p>
 <table>
 <tbody>
 <tr>
 <th scope="col">Config Type</th>
 <th scope="col">Name</th>
 <th scope="col">Description</th>
 </tr>
 <tr>
 <td>Resource</td>
 <td>config_emergency_call_number</td>
 <td>The phone number that is automatically dialed when the emergency call is
 initiated.<br>
 Type: String<br>
 Default: 112</td>
 </tr>
 <tr>
 <td>Resource</td>
 <td>config_emergency_mcc_codes</td>
 <td>An array of Integers listing the MCCs the feature should be active in.<br>
 Type: Array of Integers<br>
 Default: {404,405}</td>
 </tr>
 <tr>
 <td>Setting</td>
 <td>emergency_affordance_number</td>
 <td>Global setting override with the number to call with the emergency
 affordance. This will only have an effect on debuggable build images (ie. build
 type is userdebug or eng). This is intended only for testing.<br>
 Type: String<br>
 Default: unset</td>
 </tr>
 <tr>
 <td>Setting</td>
 <td>force_emergency_affordance</td>
 <td>Global setting, whether the emergency affordance should be shown regardless
 of device state. This is intended only for testing.<br>
 Type: Boolean (1 or 0)<br>
 Default: unset --&gt; 0</td>
 </tr>
 </tbody>
 </table>

 <h3 id="112">Enable emergency calls to 112</h3>
 <p>The emergency affordance feature connects the call using the emergency
 dialer so that the call can be connected when the lock screen is active. The
 emergency dialer connects calls only to the list of numbers provided by the
 Radio Interface Layer (RIL) through the system property:</p>

 <ul>
 <li><code>ril.ecclist</code> when no SIM is installed.</li>
 <li><code>ril.ecclist<var>SimSlotNumber</var></code> when a SIM is inserted
 and <code><var>SimSlotNumber</var></code> is the slot ID of the default
 subscriber.</li>
 </ul>

 <p>Device manufacturers using the emergency affordance feature must ensure that
 devices in India always enable 112 as an emergency number in the RIL.</p>

 <h2 id="validation">Validation</h2>
 <p>While testing on a debuggable build, the number that is called can be changed
 with the following command:</p>
 <pre class="devsite-terminal devsite-click-to-copy">
 adb shell settings put global emergency_affordance_number <var>NUMBER_TO_CALL</var>
 </pre>

 <p>Although this setting can be set on a normal user build, it will be ignored.
 To actually connect the call the number must be in the list of emergency
 numbers provided by the RIL. This can be temporarily set using the following
 command executed from a root shell on a userdebug device:</p>
 <pre class="devsite-terminal devsite-click-to-copy">
 setprop ril.ecclist "$(getprop ril.ecclist),<var>NUMBER_TO_CALL</var>"
 </pre>

 <p>The following command can also be used to force the Emergency Affordance
 feature to be enabled even in the absence of an Indian mobile network being
 detected or an Indian SIM card being inserted.</p>
 <pre class="devsite-terminal devsite-click-to-copy">
 adb shell settings put global force_emergency_affordance 1
 </pre>

 <p>At a minimum, it is recommend to test the following cases:</p>

 <ul>
 <li>Once activated, long pressing the <strong>EMERGENCY</strong> button on
 the lockscreen (Figure 1) initiates a call to the specified emergency number.
 </li>
 <li>Once activated, the <strong>Emergency</strong> item on the Global Action
 Menu is present and tapping it initiates a call to the specified emergency
 number.</li>
 <li>The feature <strong>is not activated</strong> in the absence of a
 detected Indian Mobile Network with a non-India SIM card installed.</li>
 <li>The feature <strong>is activated</strong> on the device when an Indian SIM
 card is installed, regardless of the detected mobile networks.</li>
 <li>The feature <strong>is activated</strong> on the device in the presence of
 an Indian Mobile Network, regardless of the SIM cards installed.</li>
 </ul>

 <p>If a device includes supports multiple SIM cards, testing should ensure
 that the SIM MCC detection works correctly in each SIM slot. The Emergency
 Affordance feature is not governed by Android compatibility, so there are no
 Compatibility Test Suite (CTS) tests for it.</p>

 <h2 id="faq">Frequently Asked Questions</h2>

 <h5 id="q-112">Q. The emergency number 112 has not been commissioned yet in
 India. Should it still be used?</h5>
 <p>112 is the number that will be used in India as the Public Safety Answering
 Point (PSAP) as defined by the Integrated Emergency Communications and Response
 Systems (IECRS). Until the PSAP is commissioned, all calls to 112 will be routed
 to the existing 100 emergency number (though this is the responsibility of the
 carrier, not Android).</p>

 <h5 id="q-other-triggers">Q. What about other triggers such as triple-pressing
 the power button?</h5>
 <p>Device manufacturers may choose to implement additional triggers. However,
 while the Indian DoT approves triple-tapping the hardware power button, this
 trigger is <strong>not supported</strong> in the AOSP reference implementation
 as some widely used applications (e.g. the Camera app) use power button gestures
 that include repeated tapping of the power button. Such applications might
 interfere with the emergency dialer or the user may accidentally trigger the
 panic button while trying to trigger actions in these applications.</p>

   </body>
 </html>
	<html devsite>
	<head>
	<title>Implementing Emergency Affordance</title>
	<meta name="project_path" value="/_project.yaml" />
	<meta name="book_path" value="/_book.yaml" />
	</head>
	<body>
	<!--
	Copyright 2017 The Android Open Source Project

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
	-->



	<p>All mobile devices sold in India from January 1st, 2017 must provide a
	panic button to meet Indian Department of Telecommunications (DoT) requirements.
	To address these regulatory requirements, Android includes a reference
	implementation of the Emergency Affordance feature to enable a panic button on
	Android devices.</p>

	<p>This feature is enabled by default in Android 8.0 and higher releases, but
	must be patched into existing builds of earlier releases. Currently, this
	feature is exclusively targeted at devices sold in the Indian market but can be
	included on all devices sold throughout the world as the feature has no effect
	outside India.</p>

	<h2 id="examples-source">Examples and source</h2>
	<p>The Emergency Affordance feature is implemented in the Android Open Source
	Project (AOSP)
	<a href="https://android.googlesource.com/platform/frameworks/base/">frameworks/base</a>
	project. It is available in the master branch and is enabled by default in
	Android 8.0 and higher releases.</p>

	<p>This feature is currently available in the following branches and commits.
	This information is provided to enable device manufacturers to easily patch the
	necessary changes into their existing builds. Device manufacturers wanting to
	implement the AOSP reference emergency affordance feature can cherry-pick the
	commits from the applicable branches into their own builds.</p>

	<p class="table-caption" id="cherry-picks-reference-implementation">
	<strong>Table 1.</strong> Cherry-picks for AOSP reference emergency affordance
	feature</p>
	<table>
	<tbody>
	<tr>
	<th scope="col">Branch</th>
	<th scope="col">Commits</th>
	</tr>
	<tr>
	<td>master</td>
	<td><a href="https://android-review.googlesource.com/#/c/284723/">e0c3c66</a>
	Added Emergency affordance feature<br>
	<a href="https://android-review.googlesource.com/#/c/287188/">42a4338</a>
	Added translations for emergency action string<br>
	<a href="https://android-review.googlesource.com/#/c/286858/">4df8d64</a>
	Fixed an issue where the emergency affordance would show on tablets
	</td>
	</tr>
	<tr>
	<td>nougat-dev</td>
	<td><a href="https://android-review.googlesource.com/#/c/284761/">e6680d9</a>
	Added Emergency affordance feature<br>
	<a href="https://android-review.googlesource.com/#/c/287293/">95e1865</a>
	Added translations for emergency action string<br>
	<a href="https://android-review.googlesource.com/#/c/286953/">a70bb89</a>
	Fixed an issue where the emergency affordance would show on tablets
	</td>
	</tr>
	<tr>
	<td>marshmallow-dev</td>
	<td><a href="https://android-review.googlesource.com/#/c/284624/">cd22634</a>
	Added Emergency affordance feature<br>
	<a href="https://android-review.googlesource.com/#/c/286937/">13f51c6</a>
	Added translations for emergency action string<br>
	<a href="https://android-review.googlesource.com/#/c/287241/">6531666</a>
	Fixed an issue where the emergency affordance would show on tablets
	</td>
	</tr>
	<tr>
	<td>lollipop-mr1-dev</td>
	<td><a href="https://android-review.googlesource.com/#/c/284743/">5fbc86b</a>
	Added Emergency affordance feature<br>
	<a href="https://android-review.googlesource.com/#/c/287382/">1b60879</a>
	Added translations for emergency action string<br>
	<a href="https://android-review.googlesource.com/#/c/286856/">d74366f</a>
	Fixed an issue where the emergency affordance would show on tablets
	</td>

	</tr>
	</tbody>
	</table>

	<h2 id="implementation">Implementation</h2>
	<p>The Emergency Affordance feature makes no changes to the APIs exposed through
	the Android Software Development Kit (SDK). When enabled and activated, the
	feature provides two triggers that can initiate an emergency call to 112, which
	is the single emergency number to be used in India and mandated by the Indian
	DoT regulations.</p>
	<p>An emergency call is initiated by either:</p>

	<div style="width:80%">
	<table>
	<tr>
	<th width="50%">Long pressing the <strong>EMERGENCY</strong> button<br> on the
	lockscreen</th>
	<th width="50%">Tapping the <strong>Emergency</strong> option<br> in the
	Global Action Menu</th>
	</tr>
	<tr>
	<td style="text-align: center">
	<img src="/devices/tech/connect/images/emergency-button.png" alt="emergency
	button">
	<figcaption><strong>Figure 1.</strong> <strong>EMERGENCY</strong> button on
	lockscreen.</figcaption></td>
	<td style="text-align: center">
	<img src="/devices/tech/connect/images/emergency-option.png" alt="emergency
	option">
	<figcaption><strong>Figure 2.</strong> <strong>Emergency</strong> action on
	Global Action Menu (accessed by long pressing the power key).
	</figcaption></td>
	</tr>
	</table>
	</div>

	<p>This feature introduces the following internal components:</p>
	<ul>
	<li>EmergencyAffordanceManager
	<pre class="devsite-click-to-copy">
	frameworks/base/core/java/com/android/internal/policy/EmergencyAffordanceManager.java
	</pre>
	</li>
	<li>EmergencyAffordanceService
	<pre class="devsite-click-to-copy">
	frameworks/base/services/core/java/com/android/server/emergency/EmergencyAffordanceService.java
	</pre>
	</li>
	</ul>

	<h3 id="EmergencyAffordanceManager">EmergencyAffordanceManager</h3>
	<p>The EmergencyAffordanceManager provides an internal API to use the Emergency
	Affordance feature. It provides methods for initiating the emergency call and
	querying at runtime if the feature should be enabled.</p>
	<ul>
	<li><code>void performEmergencyCall()</code>. Initiates an emergency call.</li>
	<li><code>boolean needsEmergencyAffordance()</code>. Determines if the feature
	should be active.</li>
	</ul>

	<p>The feature may be permanently disabled at build time by changing the
	<code>EmergencyAffordanceManager.ENABLED</code> constant to <code>false</code>.
	This will cause <code>needsEmergencyAffordance()</code> to always return false
	and prevent the <code>EmergencyAffordanceService</code> from starting.</p>

	<h3 id="EmergencyAffordanceService">EmergencyAffordanceService</h3>
	<p>The <code>EmergencyAffordanceService</code> is a system service that monitors
	the Mobile Country Code (MCC) of all the detected cellular networks and the MCC
	of the installed SIM cards. If any of the installed SIM cards or detected
	cellular networks have a MCC matching one of India's MCCs (404 or 405) then the
	feature will be enabled. This means the feature can be enabled in India even if
	no SIM card is present. It is assumed the mobile network will permit
	registration for emergency calls even without a SIM card installed. The feature
	will remain enabled until a non-India SIM is installed and none of the detected
	networks have a matching MCC.</p>

	<p>The following resources and settings affect the behavior of the Emergency
	Affordance feature. If the config type is:</p>
	<ul>
	<li><strong>Resource</strong>, it is an internal resource defined in
	<code>frameworks/base/core/res/res/values/config.xml</code>.</li>
	<li><strong>Setting</strong>, it is a setting stored in the systems settings
	provider.</li>
	</ul>

	<p class="table-caption" id="settings-affecting behavior">
	<strong>Table 2.</strong> Settings affecting behavior of emergency affordance
	feature</p>
	<table>
	<tbody>
	<tr>
	<th scope="col">Config Type</th>
	<th scope="col">Name</th>
	<th scope="col">Description</th>
	</tr>
	<tr>
	<td>Resource</td>
	<td>config_emergency_call_number</td>
	<td>The phone number that is automatically dialed when the emergency call is
	initiated.<br>
	Type: String<br>
	Default: 112</td>
	</tr>
	<tr>
	<td>Resource</td>
	<td>config_emergency_mcc_codes</td>
	<td>An array of Integers listing the MCCs the feature should be active in.<br>
	Type: Array of Integers<br>
	Default: {404,405}</td>
	</tr>
	<tr>
	<td>Setting</td>
	<td>emergency_affordance_number</td>
	<td>Global setting override with the number to call with the emergency
	affordance. This will only have an effect on debuggable build images (ie. build
	type is userdebug or eng). This is intended only for testing.<br>
	Type: String<br>
	Default: unset</td>
	</tr>
	<tr>
	<td>Setting</td>
	<td>force_emergency_affordance</td>
	<td>Global setting, whether the emergency affordance should be shown regardless
	of device state. This is intended only for testing.<br>
	Type: Boolean (1 or 0)<br>
	Default: unset --> 0</td>
	</tr>
	</tbody>
	</table>

	<h3 id="112">Enable emergency calls to 112</h3>
	<p>The emergency affordance feature connects the call using the emergency
	dialer so that the call can be connected when the lock screen is active. The
	emergency dialer connects calls only to the list of numbers provided by the
	Radio Interface Layer (RIL) through the system property:</p>

	<ul>
	<li><code>ril.ecclist</code> when no SIM is installed.</li>
	<li><code>ril.ecclist<var>SimSlotNumber</var></code> when a SIM is inserted
	and <code><var>SimSlotNumber</var></code> is the slot ID of the default
	subscriber.</li>
	</ul>

	<p>Device manufacturers using the emergency affordance feature must ensure that
	devices in India always enable 112 as an emergency number in the RIL.</p>

	<h2 id="validation">Validation</h2>
	<p>While testing on a debuggable build, the number that is called can be changed
	with the following command:</p>
	<pre class="devsite-terminal devsite-click-to-copy">
	adb shell settings put global emergency_affordance_number <var>NUMBER_TO_CALL</var>
	</pre>

	<p>Although this setting can be set on a normal user build, it will be ignored.
	To actually connect the call the number must be in the list of emergency
	numbers provided by the RIL. This can be temporarily set using the following
	command executed from a root shell on a userdebug device:</p>
	<pre class="devsite-terminal devsite-click-to-copy">
	setprop ril.ecclist "$(getprop ril.ecclist),<var>NUMBER_TO_CALL</var>"
	</pre>

	<p>The following command can also be used to force the Emergency Affordance
	feature to be enabled even in the absence of an Indian mobile network being
	detected or an Indian SIM card being inserted.</p>
	<pre class="devsite-terminal devsite-click-to-copy">
	adb shell settings put global force_emergency_affordance 1
	</pre>

	<p>At a minimum, it is recommend to test the following cases:</p>

	<ul>
	<li>Once activated, long pressing the <strong>EMERGENCY</strong> button on
	the lockscreen (Figure 1) initiates a call to the specified emergency number.
	</li>
	<li>Once activated, the <strong>Emergency</strong> item on the Global Action
	Menu is present and tapping it initiates a call to the specified emergency
	number.</li>
	<li>The feature <strong>is not activated</strong> in the absence of a
	detected Indian Mobile Network with a non-India SIM card installed.</li>
	<li>The feature <strong>is activated</strong> on the device when an Indian SIM
	card is installed, regardless of the detected mobile networks.</li>
	<li>The feature <strong>is activated</strong> on the device in the presence of
	an Indian Mobile Network, regardless of the SIM cards installed.</li>
	</ul>

	<p>If a device includes supports multiple SIM cards, testing should ensure
	that the SIM MCC detection works correctly in each SIM slot. The Emergency
	Affordance feature is not governed by Android compatibility, so there are no
	Compatibility Test Suite (CTS) tests for it.</p>

	<h2 id="faq">Frequently Asked Questions</h2>

	<h5 id="q-112">Q. The emergency number 112 has not been commissioned yet in
	India. Should it still be used?</h5>
	<p>112 is the number that will be used in India as the Public Safety Answering
	Point (PSAP) as defined by the Integrated Emergency Communications and Response
	Systems (IECRS). Until the PSAP is commissioned, all calls to 112 will be routed
	to the existing 100 emergency number (though this is the responsibility of the
	carrier, not Android).</p>

	<h5 id="q-other-triggers">Q. What about other triggers such as triple-pressing
	the power button?</h5>
	<p>Device manufacturers may choose to implement additional triggers. However,
	while the Indian DoT approves triple-tapping the hardware power button, this
	trigger is <strong>not supported</strong> in the AOSP reference implementation
	as some widely used applications (e.g. the Camera app) use power button gestures
	that include repeated tapping of the power button. Such applications might
	interfere with the emergency dialer or the user may accidentally trigger the
	panic button while trying to trigger actions in these applications.</p>

	</body>
	</html>