> bkml wrote:
>> SIP is not my idea of a unified call model either and it won't be for
>> a variety of reasons.
>>
>> There is a proven standard already out there, it's called Q.931 and
>> that should be the yardstick.
>
> You're lucky if all your installations are within reach of ISDN.
It doesn't matter if its ISDN.
What I am talking about is the call model, not the wiring.
> Of course, if you prefer to use TDM protocols, there is a project that
> was originally designed to do just that, and still suffers from a
> fairly
> TDM-centric design... ;-)
It seems to me that you were not paying attention to what I said.
A unified call model is about making all technologies LOOK EXACTLY
THE SAME from the viewpoint of the telephony engine/application
layer. And Q.931 is a well defined and established standard of a call
model that can be and should be used for any kind of telephony, both
TDM and VoIP.
Certainly, SIP can't and won't replace Q.931. Not a chance.
rgds
benjk
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