I am attempting to connect a Linphone 3.7.0 soft client to a Cisco MSE 8710 bridge, but the session times out after 45-50 secs over the Internet and can take up to 10 min. on the corporate VPN (but video is never received). I have configured the client as registered and unregistered to the VCS X7.2. The TPS re-invites for DTLS negotiation (added in 3.x or higher of TPS) this is going to the wrong address, the private IP address. In older versions of TPS Cisco had a bug where the Contact Header was not properly updating per RFC spec. Cisco fixed that bug and now Linphone, no longer works correctly in my company's TP environment. Is there a work-around for this issue? If not, is this issue on Cisco's roadmap to be resolved in an upcoming version of TPS?