[OpenSIPS-Users] limiting multiple registrations

Bogdan-Andrei Iancu bogdan at voice-system.ro
Wed Nov 26 18:50:12 CET 2008

Hi Jeff,

removing the registration from the proxy is not a sane thing to do :) - 
you still have a client that thinks it is still registered.

What you can do is to set max contacts to 2 and disable parallel forking 
in registrar (append_branch param -> 0).

Also set ordering of the contacts based on time criteria:

so, more or less you will have the most recent registrations on top of 
the list and you will use only the first one....


Jeff Pyle wrote:
> X-Lite/Eyebeam and a Polycom with 3.x SIP software on it are the only 
> two UAs I know of that deregister.  But I've hardly seen them all.  
> That being said, I need to knock out any existing registrations on in 
> the registrar when a new, valid one comes in.  I'm not sure how one 
> would do that.  Is there a way to force an expiration before saving 
> the new one?  Or, perhaps to outright delete it through a function of 
> the registrar module somehow?
> - Jeff
> ------------------------------------------------------------------------
> *From:* Brett Nemeroff [mailto:brett at nemeroff.com]
> *Sent:* Tuesday, November 25, 2008 11:36 AM
> *To:* Jeff Pyle
> *Cc:* users at lists.opensips.org
> *Subject:* Re: [OpenSIPS-Users] limiting multiple registrations
> I think that makes sense.. why is your UA not deregistering?
> If you are just removing power or plugging it in from one network to 
> another without properly unregistering, then I'd expect this behavior. 
> I don't think the server would have any idea if the UA is unique or not. 
> Changing the Registration period to be lower might help you with your 
> problem.. But it's just masking the real issue, which is that the old 
> registration isn't being properly deleted. 
> -Brett
> On Tue, Nov 25, 2008 at 7:10 AM, Jeff Pyle <jpyle at fidelityvoice.com 
> <mailto:jpyle at fidelityvoice.com>> wrote:
>     Hello,
>     When registrar's max_contacts is set to 1, it appears a UA must
>     deregister itself before it can register itself from another IP
>     address.
>     Otherwise the registration is rejected and a log entry appears
>     indicating the maximum registrations has already been reached.
>      I'd like
>     to limit the maximum amount of registrations to 1, but I need any new
>     registration to supercede an existing one.  Is there a relatively easy
>     way to do this, or do I need to manually search the location table
>     before saving each new registration?
>     Thanks,
>     Jeff
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