Re: [Sipping-tispan] Re: CCBS/CCNR in Version -02f

Mike, see inline comments.

mhammer@cisco.com wrote:

> 
> The behavior of the terminating caller should be based on the operation and policy of the terminating user, who should have the option to reject such a request.  The current wording seems vague on this point.  How about:

I am afraid that TISPAN does not have a requirement to give the 
possibility of the callee to reject a CCBS request. By reading ETSI ETS 
300 357 I didn't find such requirement.

Since this document covers the Input requirements from TISPAN, I am 
afraid we cannot write that requirement on the document.

> 
> REQ-CCBS/CCNR-yy: If the callee accepts invocation of a CCBS service, other
> terminating calls to this callee should be treated as though the callee was already busy.

More or less... the text is fine if it is worded with respect the caller:

"If the caller accepts a CCBS recall, other terminating calls towards 
the callee should be treated as if the callee were already busy".

Note that this requires to add a definition of the "CCBS recall", which 
dependes on "CCBS call":

CCBS call: a communnication generated by the network connecting the 
caller to the callee resulting from the callers' acceptance of a CCBS 
recall.

CCBS recall: an indication informing the caller that the network is 
ready to initiate a CCBS call to the callee and that the network is 
awaiting a response to this indication.

How about that?

> 
> Note, there are a number of depedencies (feature interactions) here.  Callee could be capable of receiving multiple calls, may have forwarding on busy set, etc.

True... for all services. We don't discuss service interaction in the 
draft, unless we see a need for protocol development.

/Miguel

> 
> Mike
> 

-- 
Miguel A. Garcia           tel:+358-50-4804586
sip:miguel.an.garcia@openlaboratory.net
Nokia Research Center      Helsinki, Finland

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