For the sake of our Archives the first register has the rport option in the via. The second register after the 401 doesn't have rport thats why its sending to the wrong port. Your phone is broken but you can fix it with NDLB-force-rport=true on the sip profile. Which might break interop with some other phones... you're better off having a "broken_rport" profile then making the busted phones register to that profile.

On Jul 7, 2008, at 11:07 AM, Alex Kinch wrote:

Hi again Brian,

As per our IRC chat I've taken a full sip trace and chucked it on
pastebin: http://pastebin.freeswitch.org/4752

Port 6666 is set in the device as it's local SIP port, and it appears
although FS manages to send 401 to the right port in response to the
REGISTER without any auth it screws up after that.

Thanks,
Alex

Brian West

sip:brian@freeswitch.org