[asterisk-users] Call preemption

John Kiniston johnkiniston at gmail.com
Wed Nov 8 13:35:29 CST 2017

The easiest thing to do might be to limit the peer to 11 calls in your
sip.conf or pjsip.conf and then use the GROUP and GROUP_COUNT functions to
limit the extension to 10 concurrent calls, Then when you get call #11 who
is high priority you can allow it through or otherwise return busy.



On Tue, Nov 7, 2017 at 4:21 AM, Jean Aunis <jean.aunis at prescom.fr> wrote:

> Hello,
> Has anyone already implemented some sort of call preemption in Asterisk ?
> I am trying to achieve something like this :
> - I want to limit the number of calls on a given SIP peer to 10
> - on the other hand, some calls have higher priority than others
> - when the ceiling of 10 calls is reached and a call with a high priority
> is attempted, I would like to drop a call with a lower priority to let the
> new one go through
> Monitoring the ceiling is easy with channel groups, but it is does not
> help in implementing call preemption since there is no function to retrieve
> all the channels of a given group.
> Does anyone have an idea ?
> Regards
> Jean Aunis
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