[OpenSIPS-Users] PBX sending calls to Opensips

[Ali Pey]

Schneur,

You can examine the src_ip first to see if the call if from your pbx or
not. Then you can also examine to request-uri to distinguish the call
between a pstn call or a sip client - assuming your sip clients have a
different sip address/pattern than pstn numbers. Things like this:

if ( src_ip == pbx1_ip || src_ip == pbx2_ip ){
# From PBXs
}

if ($rU=~"^\+?[0-9]{3,18}") {
# request-uri is for a PSTN number, send the message to whatever
route(1)
}

Basically you need to find a difference between the call attributes and
examine that, it can be the src_ip, ruri pattern, etc.

Regards,
Ali Pey

On Wed, Jul 25, 2012 at 9:41 AM, Schneur Rosenberg <rosenberg11219 at gmail.com
> wrote:

> check_source_address won't work for me, my clients are behind Dynamic
> ip's, there is no way for me to know in advance their ip address
>
> On Mon, Jul 23, 2012 at 8:55 PM, Brett Nemeroff <brett at nemeroff.com>
> wrote:
> > Scot,
> > the function "is_from_local" uses the From URI and as such, will not
> work if
> > the originator mangles the from uri (as in the case of your example
> below).
> >
> > A more secure way to do this that may suit your needs is to use the
> > permissions module and actually check the source IP of the request:
> >
> >
> http://www.opensips.org/html/docs/modules/1.8.x/permissions.html#id293503
> >
> > Look at the "check_source_address" and or "get_source_group". Either of
> > these can compare the source IP of the originator to a known list. From
> > there, you can perform script logic based on where the request came from.
> >
> > Hope that helps!
> > -Brett
> >
> >
> > On Mon, Jul 23, 2012 at 11:38 AM, Schneur Rosenberg
> > <rosenberg11219 at gmail.com> wrote:
> >>
> >> I'm using opensips as a registrar server and as a loadbalancer, all
> >> phones are registered to opensips and all incoming and outgoing calls
> >> go to Asterisk boxes via load balancing, therefore I have 3 kinds of
> >> calls going to opensips,
> >> 1) outgoing calls coming from one of the phones Registered to opensips,
> >> 2) incoming calls (we allow all incoming calls no matter from where
> >> they come, I call them unauthenticated DID)
> >> 3) Calls ringing to a phone registered to opensips, the Asterisk boxes
> >> will send the calls to the phone either after getting a call from a
> >> DID, or when a internal user wants to call another internal user
> >>
> >> The way I differentiate between the calls is  I do a      if
> >> (!(method=="REGISTER") && is_from_local()) this will check credentials
> >> and send call to asterisk to process outgoing call, then I do a  else
> >> if ((method=="INVITE"))  which will check if the call is going to a
> >> local phone by doing  if (!lookup("location", "m")) if that fails that
> >> it assumes its a incoming did call, and it will send it to asterisk
> >> with a prefix so asterisk knows its a unauthenticated incoming call,
> >> bellow I pasted a skeleton of the code I'm using.
> >>
> >> Everything worked fine, until I connected a PBX to my opensips, then
> >> the from came in with the address of the PBX and the  is_from_local()
> >> test was not true, so it did not work, I had the same problem when
> >> sending a call from a SPA3000 and blocking caller id, in that case it
> >> also obscured the from address, as follows "From: Anonymous
> >> <sip:anonymous at localhost>;tag=ea3ee097cd947aeeo0." , the only
> >> reference of the user or domain was in the RPID field  and calls did
> >> not go through.
> >>
> >> Is there anyway to check if a source IP is registered to our system
> >> and only then it should send a 407? this way if I have a BPX
> >> registered it will then ask for credentials, all others it will assume
> >> that either a call to the local phone or unauthenticated DID, I
> >> understand that I wont be able to send calls to the system only if
> >> registration was done before, but I have no problem with that,  I
> >> could do it with avp_db_query() on the subscriber table, but I want to
> >> know if there is a better way.
> >>
> >> If there is there a better solution then the above solution please let
> me
> >> know
> >>
> >>         if (!(method=="REGISTER") && is_from_local())
> >>         {
> >>                #check credentials
> >>         }
> >>          else if ((method=="INVITE"))   #unathenticated did or call
> >> going to phone registered to opensips
> >>         {
> >>
> >>                 if (!lookup("location", "m"))   #calling local phone
> >>                 {
> >>                          #send to phone registered to opensips
> >>                 }
> >>                 else
> >>                 {
> >>                          #incoming did send call to asterisk to process
> >>                 }
> >>         }
> >>         else
> >>         {
> >>                #outgoing calls route continues here
> >>         }
> >> ...................................
> >>
> >> _______________________________________________
> >> Users mailing list
> >> Users at lists.opensips.org
> >> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
> >
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.opensips.org
> > http://lists.opensips.org/cgi-bin/mailman/listinfo/users
> >
>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20120725/d3035ca3/attachment.htm>