[Serusers] cisco 7905G

[Alberto]

Hi,
I have the next scheme:

    7905G ------- NAT ------- Internet ------ SER+mediaproxy

When the 7905G sends a INVITE the ser responds:
   Status: 407 Proxy Authentication Required.

This is right, but the destination port this packet not is right because the 
ser sends the packet with
destination port 5060  (private port) and not the (public port). If I open 
this port all it is right, I do not
want to open no port.

This single problem happens to me with 7905G (no linksys, no X-Ten, ...).

I do not understand what it is happening.

Thanks for your aid.

--
Alberto