[Serusers] Ser + Asterisk

[Elton Machado]

Hi guys,


I'm working of configurations examples, how to get Ser and Asterisk 
working together in peace ;)

What I wan to do is to have ser doing all the hard work, registering, 
billing, proxying and help at nat stuff, and use asterisk to register 
myself  at my sip providers, as I couldn't found a way to do it with ser.

An idea how the things are or will be connected is...

[   UAC's      ]         ->               SER            ->             
        *   /  (Ser?)               <->  [firewall full port redirect]  
->   
router                                                                     
->  sip provider
192.168.20.x                         192.168.20.1              
192.168.20.10|192.168.30.10           192.168.30.1            
192.168.30.x   |  172.16.32.1 |         172.16.32.254 |external ip semi 
fixed or fixed


I have all the stuff running fine if I use an IAX provider, problem 
is... all my providers use sip :(

Does anyone has any clue to point me out ? Sip session goes fine but it 
just get stuck in rtp nat and I can't understand very well why. Another 
is the  UAC's try to reach by itself the sip provider jupping over all 
192.168.20.x/30.x thins goes fine if I use stun of course.

My question is... Is there any way to do the same in asterisk? Like use 
a tun server or something, or using ser to help it to change any contact 
or sip headers field? HOw is the best way to acomplished that?



Best Regards,