Sten,

You likely have a server-side setup or configuration problem as the contact 
information for each device should be different (different IP’s, different 
ports). When configured correctly, a SIP server like Asterisk will forward an 
INVITE to all contacts that are registered for a given SIP username / number.

Germán


> On 9 Mar 2021, at 15:40, Sten Kultakangas <[email protected]> wrote:
> 
> Hi
> I'm having an issue with the users who start Linphone at one computer and 
> forget to logout from Windows. Then they login to another computer and start 
> the Linphone there.
> 
> Both Linphone instances are then competing for SIP registration leaving the 
> other instance non-operational until the scheduled attempt to refresh the 
> replaced registration.
> 
> Is there a way to make Linphone stop further registration attempts ? One 
> admittedly hackish way is to make Linphone crash by sending an INVITE/UPDATE 
> message related to an established call with a specially crafted Contact 
> header containing the "isfocus" parameter as described here 
> https://github.com/BelledonneCommunications/linphone-desktop/issues/475 
> <https://github.com/BelledonneCommunications/linphone-desktop/issues/475>
> 
> However, this will only work if the server were able to place a call to a 
> replaced contact which would require a lot of customization to the server 
> code.
> 
> Best regards,
> Sten Kultakangas
> 
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