core/res/res/xml/default_zen_mode_config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
** Copyright 2014, 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.
*/
-->

<!-- Default configuration for zen mode.  See android.service.notification.ZenModeConfig. -->
<zen version="10">
    <allow alarms="true" media="true" system="false" calls="true" callsFrom="2" messages="true"
            messagesFrom="2" reminders="false" events="false" repeatCallers="true" convos="true"
            convosFrom="2"/>
    <automatic ruleId="EVENTS_DEFAULT_RULE" enabled="false" snoozing="false" name="Event" zen="1"
               component="android/com.android.server.notification.EventConditionProvider"
               conditionId="condition://android/event?userId=-10000&amp;calendar=&amp;reply=1"/>
    <automatic ruleId="EVERY_NIGHT_DEFAULT_RULE" enabled="false" snoozing="false" name="Sleeping"
               zen="1" component="android/com.android.server.notification.ScheduleConditionProvider"
               conditionId="condition://android/schedule?days=1.2.3.4.5.6.7&amp;start=22.0&amp;end=7.0&amp;exitAtAlarm=true"/>
    <!-- everything when screen off (for old target sdks); fullscreen; lights; peek; ambient -->
    <disallow visualEffects="157" />
    <!-- whether there are notification channels that can bypass dnd -->
    <state areChannelsBypassingDnd="false" />
</zen>