Inline and snipped.


>Trying to respond to all the discussers in one response - inline.
>(BTW, I'm not seeing the blue. Would prefer conventional quoting.)

I just guessed which bits were blue ;-) 

>It turns out that there are some PSTN features that seem to require 
>this. In particular, there are some features that prompt for a PIN 
>before permitting the call to proceed. Two-way audio before answer is 
>one way to handle those in sip.

I considered that scenario but for some reason assumed that the call would
normally be "answered" by some kind of media server to provide that service.
Now I think about it, your way makes more sense.

B



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