From: [EMAIL PROTECTED] I have a doubt in RFC 4235. Can there be a subscription for a set of dialogs. For ex: Event: Dialog;call-id=x;to-tag=y;from-tag=z;call-id=a;to-tag=b;from-tag=c (Is this a valid mechanism for subscribing to two dialogs)
No. Because the dialog event package subscription is not "to a dialog". It is "to an address", and (presumably) by default returns information for all dialogs active that the recipient address. Adding the "call-id", etc., parameters gives you a subset of the information that you would otherwise get. Hence, providing multiple "call-id" parameters is either redundant (if they have the same value), or contradictory (if they have different values) -- in practice, it is (or should be) forbidden. Also if there is a subscription for one dialog and that dialog is not present, should the notifier terminate the subscription by sending the notify body only with the dialog info element(No dialog elements). No, it should not terminate the subscription. No, sending a body with no dialog element does not terminate the subscription. That can be done only with the Subscription-State header. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
