I know freeswitch is b2bua, but if there is some way how could I forward custom header added earlier by proxy from one call leg to another, it would be perfect. What I'm trying to achieve in dialplan is:

<action application="set" data="sip_h_X-Source-IP=${sip_h_X-Source-IP}"/>

and bridging to gw.

So this header could be transparently forwarded, but it does not add anything. Am I doing something really wrong ?

Thanks,

Mino