I am trying to send a SIP SIMPLE message from handset 101 registered to switch A to handset 202 registered on switch C. Switch B is in the middle and is a gateway for switch A, so it looks something like this: 101 ----- FS A -----gw------- FS B -----------gw------- FS C --------- 202 I was able to get something working with the chatplan by setting the "to" parameter to point to FS B and then on FS B setting the to parameter to point to FS C. I don't know if this is even the best way to do it, but that's how I got it to work. What I would like, however, is to use TLS on all links. I currently have TLS on all links for phone calls, but I guess the chatplan doesn't use the same logic as the dialplan so by default, it is using UDP between the switches. I have been looking through the source trying to find out what I can set to enable TLS for SIMPLE between switches but I have been unsuccessful thus far. Any help would be greatly appreciated. Thanks!