Hi all,

I have some questions regarding the non-SUBSCRIBE mechanism that's
 allowed in RFC3265 to create a subscription. I hope someone could clarify
 what is correct/allowed by the RFC.

1) Considering it is allowed to create an implicit subscription with
 REFER, then I assume an Event package can define any method to create a
 subscription?

2) Regarding the duration of the subscription. Is it ok to tie the
 duration to other application state of the dialog?
For example, if an implicit subscription is created with an INVITE
 dialog, is it allowed to terminate the subscription when the INVITE dialog
 is released? Or do we have to received NOTIFY with
 Subscription-State=terminated?


Thanks for your time.

Best regards,
Tonny
       
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