[OpenSIPS-Users] I need help to fix my AOR and little bit of understanding .

[Sasmita Panda]

Hi All ,

With opensips 3.4 , if I have 2 registered contacts in the database and I
want to perform serial forking during lookup, even if both contacts have
the same q value.
Then how will I do this?

serialize_branches(1, 1);
Will this work?

        # Serial forking: serialize branches one at a time regardless of
q-value.
        # keep_order=1 (2nd arg) is REQUIRED when contacts have equal
q-values

This is what I found while searching for a solution.Do let me know , if I
am in the right track or not .

*Thanks & Regards*
*Sasmita Panda*
*Senior Network Testing and Software Engineer*
*3CLogic , ph:07827611765*


On Wed, Apr 22, 2026 at 3:17 PM Sasmita Panda <spanda at 3clogic.com> wrote:

> you mean the global parameter of registrar module .
> modparam("registrar", "max_contacts", 1)
>
> This will keep 1 AOR per contact. AOR is address of record which is the
> combination of user at IP (user at 20.0.0.1). In my case for every registration
> the IP address changes with every registration.
> So, OpenSIPS is considering this a different AOR and is saving multiple
> contacts.
>
>
> *Thanks & Regards*
> *Sasmita Panda*
> *Senior Network Testing and Software Engineer*
> *3CLogic , ph:07827611765*
>
>
> On Wed, Apr 22, 2026 at 1:12 PM Richard Robson <richard at rikrobson.co.uk>
> wrote:
>
>> Have you tried to limit the number with max_contacts() parameter ? if you
>> set the value to 1 it should only keep one AOR per contact. If that doesn't
>> do what you want you are going to have to set up some logic to do a lookup
>> foir a previous registration and manage the contacts that way, probably
>> with a is_contact_registered function.
>>
>> there are plenty of optoins in the register module
>>
>> https://opensips.org/docs/modules/3.6.x/registrar.html
>>
>>
>> Richard
>> On 22/04/2026 08:24, Sasmita Panda via Users wrote:
>>
>> Hi ,
>>
>> I am using opensips 3.4 .
>>
>> While saving the contact I have called the save unction as below .
>>
>>
>>  if(!save("location","max-contacts=1,force-registration,path-lazy"))
>>                           sl_reply_error();
>>
>> My requirement was to save a single contact for a username. If there will
>> be multiple registration then over ride the older one with the latest one .
>>
>> After this, I can see my calls getting forked between 2 contacts . I can
>> see that the IP addresses of both contacts are different, but the username
>> part is the same.
>>      user at 10.0.0.1:45670
>>      user at 10.0.0.2:58095
>>
>> This means the system saves both contacts for the user. Consequently,
>> during lookup, it finds 2 contacts and simultaneously forks the call to
>> both destinations.
>>
>> In my case, the request comes from the ALB, which has a dynamic IP. Also
>> the call id can be different. If I open multiple browser tabs and register
>> the same user from both tabs, the registration will originate with
>> different IPs and call IDs.
>>
>> How I will save single contact in this case ?
>>
>>
>> *Thanks & Regards*
>> *Sasmita Panda*
>> *Senior Network Testing and Software Engineer*
>> *3CLogic , ph:07827611765*
>>
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