Hi, i have searched the arvhices and could not find a simple example on how to configure a DID for  mod_conference, i mean you dial an DID, an ivr responds "please enter you conference number and press puond key, etc", and if the conference room was configured with pin it asks "please enter ´pin number, etc".
as i undestend, in this example from wiki:

<extension name="test_bridging_conference">
   <condition field="destination_number" expression="^(3000)$">
      <action application="answer"/>

      <action application="playback" data="connecting_your_call.wav"/>
      <action application="set" data="ringback=${us-ring}"/>
      <action application="conference" data="bridge:$1-${domain_name}@default:user/1000@${domain_name}"/>

   </condition>
</extension>

i need a gateway and if you receive the DID 3000 you join the conference right?
What i want is a single did for all the conferences.
regards