Re: [sipcore] I-DAction: draft-mohali-sipcore-reason-extension-application-01

["Worley, Dale R (Dale)" <[e-mail]>]

On 3/3/2011 11:51 AM, [e-mail] wrote:
> The purpose is to allow applications/services to be explicitely
> identified in the signaling path, so that others
> services/applications/telephony-AS can act accordingly. Either to
> apply a process taking into account the service interaction or on
> the contrary, do not execute a feature already covered by the
> application.
> 
> For instance, a caller with a prepaid service calls a directory
> enquiries Server to ask for a restaurant phone number. The operator
> would suggest to connect the caller to the researched phone number
> EXCEPT if the caller has a prepaid service because it is not sure he
> has enough credit to pay for the communication. To allow this
> customized feature, the directory enquiries Application needs to
> know that the prepaid Application has been invocated.

Could we see an example of how this is expected to be done?  (Or have I
overlooked the example?)  There are various subtlties in a protocol
feature whose *absence* in the signaling tells another application that
a certain action may be taken.

Dale