i have a new client with a uc540 setup and there is 3 phones. 1 phone offsite at a remote location with an spa525g2 with ssl vpn, and when she (the remote user) calls someone every so often the conversation stops, i called her to see how it was working and all of a sudden i stopped being able to hear her, like it was an RTP issue, the only thing is the firewall on the uc is temp. disabled due to troubleshooting issues. and MTP is enabled on the remote phone. attached is the debug (i was lucky enough to be running ccsip and ccapi when i was talking to her) and the show run. in the debug your gonna see the uc500 swap ports from 5060 to some random port, i have sense fixed with the connection-reuse but its still happening.