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

Ben Newlin Ben.Newlin at genesys.com
Fri Dec 15 11:53:00 EST 2017


You could also put the AoR that the gateways will use to register as an attribute on the rule/carrier/gateway in DR. Then when you do the lookup you provide avps for the attributes to be provided back and you can do the lookup based on that.

Ben Newlin

From: Users <users-bounces at lists.opensips.org> on behalf of Bogdan-Andrei Iancu <bogdan at opensips.org>
Reply-To: OpenSIPS users mailling list <users at lists.opensips.org>
Date: Friday, December 15, 2017 at 11:35 AM
To: OpenSIPS users mailling list <users at lists.opensips.org>, Jeffrey Zhao <chunyong.zhao at qq.com>
Subject: Re: [OpenSIPS-Users] drouting module -- How to use registered gateway as outbound gateway

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<mailto: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.

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