core/res/res/values-mcc311-mnc190/config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
** Copyright 2013, 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 my 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.
*/
-->

<!-- These resources are around just to allow their values to be customized
     for different hardware and product builds. -->
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">

    <!-- Array of ConnectivityManager.TYPE_xxxx values allowable for tethering -->
    <!-- Common options are [1, 4] for TYPE_WIFI and TYPE_MOBILE_DUN or
    <!== [0,1,5,7] for TYPE_MOBILE, TYPE_WIFI, TYPE_MOBILE_HIPRI and TYPE_BLUETOOTH -->
    <integer-array translatable="false" name="config_tether_upstream_types">
      <item>1</item>
      <item>4</item>
      <item>7</item>
      <item>9</item>
    </integer-array>

    <!-- String containing the apn value for tethering.  May be overriden by secure settings
         TETHER_DUN_APN.  Value is a comma separated series of strings:
         "name,apn,proxy,port,username,password,server,mmsc,mmsproxy,mmsport,mcc,mnc,auth,type"
         note that empty fields can be ommitted: "name,apn,,,,,,,,,310,260,,DUN" -->
    <string translatable="false" name="config_tether_apndata">Tether,broadband.cellular1.net,,,,,,,,,311,190,,DUN</string>

</resources>