Re: [AVT] 2833bis - hook events

[Chuck Harrison <cfharr@erols.com>]

Hi, all

Henning Schulzrinne wrote:
> 
> > Right, but they should not also be sending on-hook and off-hook events
> > as states
> > since you would then effectively be sending the flash twice.
> 
> Certainly. I noted the exclusion, although I'd hope the temptation is
> low. I also added that receivers should ignore Flash if they are in
> explicitly signaled off-hook or on-hook state.
> 

Are you sure this is right? It's been a long time since I was
involved in telephony but I would think you go to off-hook state
for the duration of the call and that a "flash" would be a valid
*event* during an off-hook *state*. Flash during an on-hook state
would be invalid/ignored.

In the olden days you'd distinguish these with a copper slug on
the core of a relay. :-)

Cheers,
  Chuck

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