[Freeswitch-users] SIP Call-ID

Anthony Minessale

2008-06-07 15:34:00 UTC

We didn't currently support that but I added a patch to trunk that should
let you do it.

sip_outgoing_call_id variable set on a new channel should let you choose
your own call id.

on the a leg ${sip_call_id} could be passed to the b leg one of 2 ways.

using the "export" app on the A leg: one call before the bridge

<action application="export" data="sip_outgoing_call_id=${sip_call_id}"/>
<action application="bridge" data="sofia/default/foo at bar.com"/>

using the originate syntax in the bridge.

<action application="bridge"
data="{sip_outgoing_call_id=${sip_call_id}}sofia/default/foo at bar.com"/>

Post by Jed Stafford
I'm working to get FreeSwitch working behind a SIP load balancer. Using the
sip-ip param in a profile I'm able to make the outbound calls appear to come
from the load balancer IP address. Debugging the sip messages, this all
appears to be working correctly.
However the load balancer determines which machine to send the calls too
based on the SIP Call-ID. We want FreeSwitch in the middle of the call for
billing and other purposes. But i'd like FreeSwitch to use the same SIP
Call-ID that was sent to it when it initiates the next leg of the call. The
in the sip call-id. Is there a function in the dialplan to copy the source
call-id and use it for the destination leg?
Hopefully I've explained this well enough, any ideas would be helpful.
Regards,
-Jed
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Anthony Minessale II

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