[OpenSIPS-Users] B2BUA Implementation for Transfer

[Duane Larson]

I am missing a alot of that.  Now I see why I am getting the duplicate
INVITES since I am not exiting after the B2B_INIT

So I need to do something like this

if(is_method("INVITE") && !(src_ip == "OPENSIPS_IP") && !has_totag() ) {
{
    location();
    b2b_init_request("refer");
    exit;
}


I will test that out.



On Thu, Oct 28, 2010 at 3:39 AM, Anca Vamanu <anca at opensips.org> wrote:

> Hi,
>
> Do you exit the script after calling b2b_init_request? When calling this
> function you should have the following conditions:
> - it Invite - is_method("INVITE")
> - it initial - !has_totag()
> - does not come from the same machine ( in case you have the proxy on
> the same machine and the request generated by the B2BUA will get looped
> back into the script) !(src_ip=="MY_IP" && src_port=="MY_PORT").
> Then if you have this you can call the b2b_init_request either at the
> start of the script, as you did, or somewhere lower after
> lookup("location"). You can call it after if you don't want to do any
> other change on the request generated - and it will be sent directly to
> the IP discovered in location.
>
> Regards,
>
> --
> Anca Vamanu
> www.voice-system.ro
>
>
>
>
> On 10/26/2010 09:12 PM, osiris123d wrote:
> > I have seen there are a couple of posts about this so I apologize if this
> > seems redundant.
> >
> > I am starting to mess with the B2BUA and am having some issues.  I am
> trying
> > to solve the transfer issue when a local OpenSIPS subcriber is on the
> phone
> > with a PSTN user and wants to transfer the PSTN user to another OpenSIPS
> > user.  I have created the refer.xml file and set up the module
> parameters,
> > so all that is fine.  The issue I am seeing are the invites getting sent
> out
> > from OpenSIPS.
> >
> > If I place my
> > b2b_init_request("refer");
> > at the very beginning of my route logic before consume_credentials(),
> > location() and all that other junk I see that two Invites are sent
> >
> > Say the user is 444 at irock.com
> > The B2B CALL-ID generated message gets sent to the actual IP address of
> > irock.com, which it shouldn't.
> > Then a correct invite gets sent to 444 at 7X.45.X.44 which is the correct
> info
> > that is pulled from the location table, but this invite does not have the
> > B2B CALL-ID info in it.  So it seems I have placed the b2b_init_request
> in
> > the wrong spot on my script.
> >
> >
> > Then when I place the b2b_init_request after I execute the location() in
> my
> > route logic I see the following
> > two invites
> >
> > The first invite is the B2B invite with the B2B CALL-ID.  It gets sent
> > correctly to 444 at 7X.45.X.44 instead of to the actually IP of irock.com.
>  The
> > only problem here is that within the actual TO: field of the sip message
> it
> > is 444 at 7X.45.X.44 instead of 444 at irock.com.  So the phone rejects this
> > invite with a "SIP/2.0 404 Not Found" since the phone only knows itself
> as
> > 444 at irock.com.
> >
> > The second invite is as usual the normal invite without the B2B CALL-ID.
> >
> > So I guess the issue I am having is that dual invites are being sent and
> the
> > B2B is either sending it to the wrong IP address or it is placing the
> wrong
> > domain in the invite for the user.
> >
>
> _______________________________________________
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> Users at lists.opensips.org
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>



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Duane
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