Forked dial is when you want to attempt to ring 2 destinations at the same time. Freeswitch will attempt to call both bridge options simultaneously. The first bridge leg that replies with a 183 (session progress) message will win the call, and the other bridge leg is dropped. This only will work if you enable inbound-late-negotiation in the profile this recipe is executing under ( not in the bridged-to profile ).

an example is:

 <extension name="dialoutpstn">
     <condition field="destination_number" expression="^((00).*)$">
       <action application="set" data="hangup_after_bridge=true"/>
       <action application="set" data="ignore_early_media=true"/>
       <action application="bridge" data="sofia/gateway/gatewayA/$1@1.2.3.4,sofia/gateway/gatewayB/$1@4.5.6.7"/>
       </condition>
 </extension>