Question about siproxd?

[danswartz]

So my pbx in a flash system behind pfsense is working just fine.  siproxd is running, and I have the rtp proxy enabled (default).  I did not set any of the port or other fields, since it claims they default to the right values.  I'm not sure I believe it is actually doing anything though, as the config page says the default ports are 7070-7079, but when I made a test call just now, the outbound port number was in the high range.  Am I missing something here?  I've googled and seen all kinds of conflicting posts about siproxd, so I am not sure what to believe…