[asterisk-dev] Dialog Subscriptions, Bug 6728 and snom dialog; purpose=call-completion

[Martin Koenig]

Hello all,

https://issues.asterisk.org/view.php?id=6728

We have recently had trouble reports from customers using snom 3xx phones
with active call_completion Parameter.

In specific cases of call forwarding via a function key, the dialog state
subscriptions to specific hints get unsubscribed because the call completion
mechanism subscribes to the same hint with a shorter expires time than the
original subscription.

The original subscription is
Event: dialog, Expires: 3600

The call-completion subscription is
Event: dialog;purpose=call-completion, Expires: 60

Now, afaik there is no feature "call completion" in Asterisk. I was
wondering why the "work-around" of bug #6728 has actually been accepted,
thus introducing at least at least a "race condition" to the dialog state
feature.

Best regards,
Martin Koenig