Hello all, we are developing a custom app that will require sending a Subject: header (with a specific value) with the initial invite to trigger additional calling features and behavior.  What we’re finding when we send the Invite,  is that FS is dropping the Subject: header and continues normal call processing.  Is there a configuration parameter that allows the header to pass through FS?

I submitted a SIP trace in pastbin and the reference number is 14853.

Mike