Trixbox and Sipura Registration Failed

I am trying to Register My Linksys spa941 with trixbox, and it keeps failing, here is what I have done. Entered setup-linksys into trixbox cli, then went into trixbox endpoint manager and installed phone, then restarted phone, then put trixbox ip in the proxy settings in ext1 in the sipura web configuration along with the extension number and password, but it keeps failing, there both on the same switch behind a router.