Would this do what you want?

<context name="H3KSip_SP_outbound">
  <extension name="outbound_softphone">
    <condition field="${channel_name}" expression="^sofia/H3KSip_B2Bua/.*$" break="on-false">
      <action application="set" data="ringback=%(1500,3000,425)" />
      <action application="set" data="instant_ringback=true" />
      <action application="set" data="hangup_after_bridge=false" />
      <action application="bridge" data="{ignore_early_media=true,absolute_codec_string=G722,PCMU,PCMA}sofia/gateway/GW_H3KSip/${destination_number}" />
      <action application=“park"/>
    </condition>
  </extension>
</context> 



On Mar 31, 2017, at 6:02 AM, Alexander Haugg <Alexander.Haugg@c4b.de> wrote:

Hi,
 
Ich try to catch the leg A after the destination is hangup with the cause busy to signalling a busy tone stream to the caller (leg A)
 
But leg A will dropped too.
 
Here is the test dialplan:
 
<context name="H3KSip_SP_outbound">
  <extension name="outbound_softphone">
    <condition field="${channel_name}" expression="^sofia/H3KSip_B2Bua/.*$" break="on-false">
      <action application="set" data="ringback=%(1500,3000,425)" />
      <action application="set" data="instant_ringback=true" />
      <action application="multiset" data="ignore_early_media=true hangup_after_bridge=false park_after_bridge=true" />
      <action application="export" data="nolocal:absolute_codec_string=G722,PCMU,PCMA" />
      <action application="bridge" data="{ignore_early_media=true}sofia/gateway/GW_H3KSip/${destination_number}" />
      <action application="log" data="ERR last_bridge_hangup_cause=${last_bridge_hangup_cause}" />
      <action application="log" data="ERR bridge_hangup_cause=${bridge_hangup_cause}" />
      <action application="sleep" data="1000" />
      <action application="playback" data="tone_stream://%(480,480,425);loops=3" />
      <action application="hangup" data="USER_BUSY"/>
    </condition>
  </extension>
</context> 
 
Whats wrong?