Add asteriskinfo in sip message

is it possible of embedding some asterisk unique id or something to the sip header to be able of tracking call when using external voip call recorder?

/ MArcus

SIPAddHeader

yes i found some info myself, though we are making calls through originate action AMI. the thing is that we want to be able of matching external call recordings with asterisk agents. one possible way would be of sending asterisk unique id with sip message i thought, but perhaps someone have a better idea?