[Kamailio-Users] How to prevent - Same username used on multiple sip phones

[Alex Hermann]

On Tuesday 30 September 2008, Daniel-Constantin Mierla wrote:
> to deal with some
> broken NAT/STUN devices, when you are sure there is a single phone, but
> each registration gets with a new port for each register refresh.

How usefull is this? How do you get packets from the outside through the NAT 
if the NAT is losing its mappings?

Alex.