[Freeswitch-users] Manipulate the SDP origin field

Chris Graham chrisg.lists at gmail.com
Wed Oct 26 00:50:22 MSD 2011

Hi All,

I have an issue whereby my cluster is in a mixed nat and not-nat
environment. I would like to manipulate the o= field on a per call

In short I would like to achieve the below two scenarios, based on the dialplan
Internal offer:
Owner/Creator, Session Id (o): root 4267 4267 IN IP4

External offer:
Owner/Creator, Session Id (o): root 4267 4267 IN IP4

I have tried the below, with no success to the origin field.

<action application="bridge"

<X-PRE-PROCESS cmd="set" data="bind_server_ip="/>

<param name="ext-rtp-ip" value="$${local_ip_v4}"/>
 <param name="ext-sip-ip" value="$${local_ip_v4}"/>

<param name="ext-rtp-ip" value=""/>
<param name="ext-sip-ip" value=""/>

Thanks in advance for any assistance,
Chris G

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