We have a CVP application that needs to accept a fairly complicated set of digits, and an elegant design solution involved the use of a DTMF grammar.
Upon deployment, we are seeing that this results in an ASR license being allocated to this call, even though it is a DTMF-only application.
Is there a way to utilize a DTMF grammar without having the system use an ASR license? We are trying to specify that the caller can enter a valid menu option (1-4, *) OR a 6-digit extension number at the input. A DTMF grammar allows this to be done with leveraging the application standards processing for invalid inputs, which is clean.
I don't know how to solve that problem, but I do have a view on this type of user interface, which I expressed recently when a similar question was asked in the context of IPIVR. I hope you won't consider this a thread-crap.
I believe that this mixing of digit entry (for dial by extension) with menu options is old fashioned, having been derived from the way old PBX/IVR collected digits; and it is hard to implement and has poor error checking.
With CVP I prefer a menu with an option like - "for dial by extension, press 1" and then send the caller to a nice handler like Unity. One customer also wanted the "dial by name" option, and again, off to Unity which of course does a splendid job.
Recently, a low bandwidth line between the voice gateway at the branch office and centralized Unity pushed me to implement a dial by extension application in CVP (running on the VG), selected after a menu option. I implemented this using microapps. There are only 150 phones so I can check that the entry is valid before returning the label - in CVP 7 you can do this with a SIP refer to release the CVP port.
Is it possible to have the customer consider splitting the two functions apart and building the CVP applications separated by ICM scripting?
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