[Users] Usrloc question

[Daniel-Constantin Mierla]

Hello,

there is a solution using the branch_route[] in openser. For each branch 
created after the usrloc lookup you can make different checks.

So, in the branch route you have to check the IP in the R-URI and if 
matches the asterisk IP, then drop it 
(http://openser.org/dokuwiki/doku.php?id=openser_core_cookbook#drop).

There is an example how to check source and destination addresses, 
although in your case you can do it even without avps:
http://www.voice-system.ro/docs/avpops/ar01s08.html#ex_org_dst

Cheers,
Daniel

On 11/15/05 17:05, Darren Nay wrote:
>
> Hey all,
>
> I have a question regarding usrloc. I have run into a problem..
>
> We have static routes sent to an asterisk server for all of our SIP 
> usernames. In addition our IAD’s will register with the same username, 
> so that calls coming into our switch for that username will be routed 
> to both the asterisk box and the SIP IAD. This way, whichever endpoint 
> (IAD or asterisk) answers the call first will take the call.
>
> For example.
>
> root:/ # serctl ul show +18646404810
>
> <sip:+18646404810 at 192.168.1.60>;q=1;expires=-1012151
>
> <sip:+18646404810 at 192.168.1.157:5060>;q=;expires=403
>
> 192.168.1.60 is the asterisk server. This is a static route added by 
> serctl.
>
> 192.168.1.157 is my IAD which registers with the switch every 10 minutes.
>
> So when calls are made to (864) 640-4810 then SER will send an INVITE 
> to both location.
>
> I explained all of this just to explain now what my problem is, and 
> ask if anyone may know a possible solution.
>
> Now, we also use asterisk to perform call fwd’ing functions. Asterisk 
> will answer the call and then originate another call out back to SER 
> to a new location. Now the problem! (finally!) This call fwd’ing 
> method works very well in most cases, except that if the call fwd’ing 
> is being sent to another location registered with SER then it will be 
> redirected back to asterisk again, albeit to a different URI, and 
> asterisk will kill the call because it thinks that it has looped 
> (which I guess it has… sort of).
>
> So, I’m wondering if there is possibly a way to retrieve only the 
> usrloc locations that don’t contain the IP address 192.168.1.60 in the 
> contact URI? This way I can just check if the src_ip is 192.168.1.60 
> and if so then retrieve all the usrloc locations – without asterisk – 
> and the call will not be redirected back to asterisk.
>
> Is this possible? Or if anyone has any other ideas that may help then 
> I am definitely open to suggestions.
>
> Thanks for your help!!
>
> Darren Nay
>
> Ionosphere, Inc
>
> VoIP Network Development
>
> dnay at ionosphere.net <mailto:dnay at ionosphere.net>
>
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