Hello, I am wondering what would be involved in getting pjsip to properly handle re-invites (SDP changes after call is answered). I believe this is covered in RFC 3264, section 8. One of our PBX's seems to do this quite often for no good reason. It seems to only change its port and address. Thanks, -- Michael Broughton, Advanis Unintended Recipient & Unauthorized Use of E-Mail: This message and attachments may contain confidential or privileged information that is intended only for the named recipient of this e-mail. Any unauthorized use or distribution is not permitted. If you have received this e-mail in error, deleting the e-mail and notifying the sender would be appreciated. Thank you.