hi,
i want to transfer calls from one provider to another one. i've done like this.

 <condition field="network_addr" expression="^xx\.yy\.zz\.tt$">
        <action application="set" data="ringback=...."/>
        <action application="pre_answer" data=""/>
        <action application="bridge" data="{...}sofia/external/${destination_number}@$${OTHER_PROVIDER}"/>
        <action application="answer" data=""/>
        <action application="hangup" data=""/>
 </condition>

Questions:
1- is this the right way?
2- when i do like this, do RTP packages go over my server?
3- what should i do, just to transfer signalling, not to transfer media over my server?

thanks.