[OpenSIPS-Users] drouting module -- How to use registered gateway as outbound gateway

[Bogdan-Andrei Iancu]

Hi Jeffrey,

To do something like that, you need to have in DR  (as gateway) the AOR 
used by the GW to register with. And after you do do_routing() you do 
lookup(location).

Now the tricky part is to link them, as Drouting is IP/domain driven 
while user location is AOR driven.

So, in DR use as GW 127.0.0.1 (.2 and so on) - even if there is 
something phony, it has to be a valid IP. Now, after do_routing() you 
will have in RURI sip:DID at 127.0.0.1 which needs to be pushed into user 
location. Do transform it into a valid AOR (to be used as search key by 
user location), save the username part of RURI into a variable (for 
later restoring) and strip it -> ruri = sip:127.0.0.1 .Further use some 
subst/string transformation to do a static transformation from 127.0.0.N 
to gwN string and build AOR as sip:gwN at opensips_domain. So, in your case 
you will get sip:gw1 at opensips_domain as an AOR that can be used for 
lookup location (of course, your GW must register under the AOR of 
sip:gw1 at opensips_domain). After lookup(location) just restore the DID 
back into username part -> sip:DID at gw_address .
Basically the trick is to get a static mapping between the phony IPs you 
put in DR (like 127.0.0.N) and the AORs used by the GW to register (like 
gwN at opensips_domain), so you can link them.

Regards,

Bogdan-Andrei Iancu
   OpenSIPS Founder and Developer
   http://www.opensips-solutions.com

On 12/15/2017 02:39 AM, Jeffrey Zhao wrote:
> Dear all
> We are using drouting module for dialplan routing,  for NAT issues, we need to register outbound voice gateway to opensips, instead of fixed static IP.
> Is there any way to use registered gateway as routing destination?
>
> Thanks.
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users