title: DBUS ofono can not communicate with pulseaudio
body: <p>I am trying to set up bluez-5.50 with ofono-1.18 and pulseaudio-12.0 in order to handle phone calls over Bluetooth. However, I'm getting the following problem over dbus-monitor.</p>
  
  <pre><code>error time=1539324786.794398 sender=org.freedesktop.DBus -&gt; destination=:1.28 error_name=org.freedesktop.DBus.Error.AccessDenied reply_serial=23
     string "Rejected send message, 1 matched rules; type="method_return", sender=":1.28" (uid=0 pid=22288 comm="pulseaudio --realtime ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.25" (uid=0 pid=22285 comm="/usr/sbin/ofonod -d -n ")"
  </code></pre>
  
  <p>My /etc/dbus-1/system.conf is as follows:</p>
  
  <pre><code>&lt;policy user="root"&gt;
      &lt;allow own="org.pulseaudio"/&gt;
      &lt;allow own="org.pulseaudio.Server"/&gt;
      &lt;allow own="org.ofono"/&gt;
      &lt;allow send_destination="org.ofono"/&gt;
      &lt;allow send_interface="org.ofono.SimToolkitAgent"/&gt;
      &lt;allow send_interface="org.ofono.PushNotificationAgent"/&gt;
      &lt;allow send_interface="org.ofono.SmartMessagingAgent"/&gt;
      &lt;allow send_interface="org.ofono.PositioningRequestAgent"/&gt;
      &lt;allow send_interface="org.ofono.HandsfreeAudioAgent"/&gt;
      &lt;allow own="org.bluez"/&gt;
      &lt;allow send_destination="org.bluez"/&gt;
      &lt;allow send_interface="org.bluez.Agent1"/&gt;
      &lt;allow send_interface="org.bluez.MediaEndpoint1"/&gt;
      &lt;allow send_interface="org.bluez.MediaPlayer1"/&gt;
      &lt;allow send_interface="org.bluez.ThermometerWatcher1"/&gt;
      &lt;allow send_interface="org.bluez.AlertAgent1"/&gt;
      &lt;allow send_interface="org.bluez.Profile1"/&gt;
      &lt;allow send_interface="org.bluez.HeartRateWatcher1"/&gt;
      &lt;allow send_interface="org.bluez.CyclingSpeedWatcher1"/&gt;
      &lt;allow send_interface="org.bluez.GattCharacteristic1"/&gt;
      &lt;allow send_interface="org.bluez.GattDescriptor1"/&gt;
      &lt;allow send_interface="org.freedesktop.DBus.ObjectManager"/&gt;
      &lt;allow send_interface="org.freedesktop.DBus.Properties"/&gt;
    &lt;/policy&gt;
  </code></pre>
  
  <p>To my understanding, pulseaudio and ofono can not communicate, although I get sound output from ofono to pulseaudio. Another reason might be that pulseaudio is started with pulseaudio --start, but other daemons are started with systemd services.</p>
  
  <p>After a while, ofono disconnects, even Bluetooth disconnects. I suspect this dbus error might be the cause of that. Any guidance is appreciated.</p>