data/res/values/config_telephony.xml

<?xml version="1.0" encoding="utf-8"?>
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  ~ 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
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  ~      http://www.apache.org/licenses/LICENSE-2.0
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  ~ distributed under the License is distributed on an "AS IS" BASIS,
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  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->
<resources>
    <!-- This file defines Android telephony related resources -->

    <!-- Whether force disabling telephony new data stack or not.
         This flag and the old data stack code will be deleted in Android 14.
    -->
    <bool name="config_force_disable_telephony_new_data_stack">false</bool>
    <java-symbol type="bool" name="config_force_disable_telephony_new_data_stack" />

    <!-- Configure tcp buffer sizes per network type in the form:
         network-type:rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max

         The network-type must be a valid DataConfigNetworkType value. If no value is found for the
         network-type in use, config_tcp_buffers will be used instead.
    -->
    <string-array name="config_network_type_tcp_buffers">
    </string-array>
    <java-symbol type="array" name="config_network_type_tcp_buffers" />

    <!-- Configure tcp buffer sizes in the form:
         rmem_min,rmem_def,rmem_max,wmem_min,wmem_def,wmem_max
         If this is configured as an empty string, the system default will be applied.
    -->
    <string name="config_tcp_buffers" translatable="false">2097152,6291456,16777216,512000,2097152,8388608</string>
    <java-symbol type="string"  name="config_tcp_buffers" />

    <!-- What source to use to estimate link upstream and downstream bandwidth capacities.
         Default is bandwidth_estimator.
         Values are bandwidth_estimator, carrier_config and modem. -->
    <string name="config_bandwidthEstimateSource">bandwidth_estimator</string>
    <java-symbol type="string" name="config_bandwidthEstimateSource" />

    <!-- Whether to adopt the predefined handover policies for IWLAN.
         {@see CarrierConfigManager#KEY_IWLAN_HANDOVER_POLICY_STRING_ARRAY}
    -->
    <bool name="config_enable_iwlan_handover_policy">true</bool>
    <java-symbol type="bool" name="config_enable_iwlan_handover_policy" />

    <!-- When a radio power off request is received, we will delay completing the request until
         either IMS moves to the deregistered state or the timeout defined by this configuration
         elapses. If 0, this feature is disabled and we do not delay radio power off requests.-->
    <integer name="config_delay_for_ims_dereg_millis">0</integer>
    <java-symbol type="integer" name="config_delay_for_ims_dereg_millis" />

    <!-- Boolean indicating whether the Iwlan data service supports persistence of iwlan ipsec
         tunnels across service restart. If iwlan tunnels are not persisted across restart,
         Framework will clean up dangling data connections when service restarts -->
    <bool name="config_wlan_data_service_conn_persistence_on_restart">true</bool>
    <java-symbol type="bool" name="config_wlan_data_service_conn_persistence_on_restart" />

    <!-- Cellular data service package name to bind to by default. If none is specified in an
         overlay, an empty string is passed in -->
    <string name="config_wwan_data_service_package" translatable="false">com.android.phone</string>
    <java-symbol type="string" name="config_wwan_data_service_package" />

    <!-- IWLAN data service package name to bind to by default. If none is specified in an overlay,
         an empty string is passed in -->
    <string name="config_wlan_data_service_package" translatable="false"></string>
    <java-symbol type="string" name="config_wlan_data_service_package" />

    <!-- Cellular data service class name to bind to by default. If none is specified in an overlay,
         an empty string is passed in -->
    <string name="config_wwan_data_service_class" translatable="false"></string>
    <java-symbol type="string" name="config_wwan_data_service_class" />

    <!-- IWLAN data service class name to bind to by default. If none is specified in an overlay, an
         empty string is passed in -->
    <string name="config_wlan_data_service_class" translatable="false"></string>
    <java-symbol type="string" name="config_wlan_data_service_class" />

    <!-- Cellular network service package name to bind to by default. -->
    <string name="config_wwan_network_service_package" translatable="false">
        com.android.phone
    </string>
    <java-symbol type="string" name="config_wwan_network_service_package" />

    <!-- Cellular network service class name to bind to by default.-->
    <string name="config_wwan_network_service_class" translatable="false"></string>
    <java-symbol type="string" name="config_wwan_network_service_class" />

    <!-- IWLAN network service package name to bind to by default. If none is specified in an
         overlay, an empty string is passed in -->
    <string name="config_wlan_network_service_package" translatable="false"></string>
    <java-symbol type="string" name="config_wlan_network_service_package" />

    <!-- IWLAN network service class name to bind to by default. If none is specified in an overlay,
         an empty string is passed in -->
    <string name="config_wlan_network_service_class" translatable="false"></string>
    <java-symbol type="string" name="config_wlan_network_service_class" />

    <!-- Telephony qualified networks service package name to bind to by default. -->
    <string name="config_qualified_networks_service_package" translatable="false"></string>
    <java-symbol type="string" name="config_qualified_networks_service_package" />

    <!-- Telephony qualified networks service class name to bind to by default. -->
    <string name="config_qualified_networks_service_class" translatable="false"></string>
    <java-symbol type="string" name="config_qualified_networks_service_class" />

    <!-- Whether enhanced IWLAN handover check is enabled. If enabled, telephony frameworks
         will not perform handover if the target transport is out of service, or VoPS not
         supported. The network will be torn down on the source transport, and will be
         re-established on the target transport when condition is allowed for bringing up a
         new network. -->
    <bool name="config_enhanced_iwlan_handover_check">true</bool>
    <java-symbol type="bool" name="config_enhanced_iwlan_handover_check" />
</resources>