Hi,

I believe what you need can be achieved using custom events in freeswitch and lua scripts. So if you don't get a cancel you can trigger script on answer event and hangup a call to specific device. So if dev1 answer you can hangup call to dev2:

https://wiki.freeswitch.org/wiki/Variable_api_on_answer

With kind regards,

Jurijs

On Tue, Nov 28, 2017 at 1:48 AM, Srigo Kanapathipillai <ksrigo@gmail.com> wrote:

Hi Danyi,

You can achieve it using Opensips (and freeswitch) (https://blog.opensips.org/2017/03/10/advanced-sip-scenarios-with-event-based-routing/) See the push notification example at the bottom.

Srigo 

Sent from my iPhone

On 27 Nov 2017, at 23:50, Michael Jerris <mike@jerris.com> wrote:

We have no plans to add it but if you are interested in sponsoring such an addition you could contact our professional services group at consulting@freeswitch.com to discuss.

On Nov 27, 2017, at 4:12 PM, Danyi Lin <danyi.lin@gmail.com> wrote:

Thanks for replying.

Michael, Is there any plan to add such feature into FreeSWITCH?

It will be very useful for mobile app, because usually mobile (iOS) app can't keep registration alive all the time.

Intercepting call could solve my problem, but not as straight forward as this way.

On Mon, Nov 27, 2017 at 3:49 PM, Michael Jerris <mike@jerris.com> wrote:

We do not support such a feature at this time.

On Nov 27, 2017, at 1:11 PM, Danyi Lin <danyi.lin@gmail.com> wrote:

How can I fork a call to a new registered endpoint?

Here is the scenario:
Callee has 2 devices: dev1 online (registered), dev2 offline

1. An incoming call to the user, dev1 is ringing
2. dev2 register now
3. fork call to dev2

Call flow as below (https://gist.github.com/dylin/5ef157f2bc4da8b1c0b145c03e9efcfd):

  Caller    |     FS      |    dev1     |   dev2
-----------   -----------   -----------   -----------
     |  INVITE     |            |            |
     |------------>|            |            |
     |             |            |            |
     |             | INVITE     |            |
     |             |----------->|            |
     |             |            |            |
     |             |            | REGISTER   |
     |             |<-----------+------------|
     |             |            |            |
     |             | INVITE     |            |
     |             |------------+----------->|
     |             |            |            |

I tried freeswitch.Session("sofia/to/dev2", lega) to originate call to dev2,

and dev2 got call. However if dev1 answered call, it won't cancel INVITE

to dev2 as a normal fork.

Any suggestions are welcome.

Best regards,
Danyi Lin

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_________________________________________________________________________
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_________________________________________________________________________
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consulting@freeswitch.org
http://www.freeswitchsolutions.com

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http://confluence.freeswitch.org
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