Hello Adam,

To check the registration state, you can use the "registered()" function
- http://www.opensips.org/html/docs/modules/1.9.x/registrar.html#id293152 .

To check if the user is already in a call, you need to use the dialog
module with dialog profiles (profiles with values). Another option will
be to route to user and if catch the 486 reply in a failure route.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 05/14/2013 04:49 PM, Adam Raszynski wrote:
> Hi all,
>
> I would like to know is it possibble to check in OpenSIPS if user that
> is destination of a call is registered and not busy (no other calls to
> same username) without sending INVITE request?
>
> I need this to create some kind of dynamic routing with busy detection
>
> Any tips?
>
>
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