[Asterisk-Users] Announced Call Transfer

[Bartosz Jozwiak]

----- Original Message ----- 
From: "Rich Adamson" <radamson at routers.com>
To: <asterisk-users at lists.digium.com>
Sent: Wednesday, October 15, 2003 11:04 AM
Subject: Re: [Asterisk-Users] Announced Call Transfer


> > > Michael T Farnworth wrote:
> > >
> > > >more expensive phone in reception but leave the other people on the
cheap
> > > >Grandstream phones?
> > > >
> > > Yes, I have found the Snom200 does consultative transfers well..
> > >
> > > >Couldn't this problem be solved with an asterisk upgrade?
> > > >
> > > No, Its an issue that is handled on the phone..
> >
> > Perhaps I am confused, but I tend to believe that Asterisk sits in the
> > middle of all these calls.  So when I press the # key for transfer it
>
> In many cases, that's a bad assumption, but it depends on your config.
>
> Unless you've purposefully configured something different, asterisk is
> "not" in the middle. Once a call is established, the communications
> (packet flows) happen directly between the two sip phones and does not
> pass through asterisk.

I thought asterisk is bridging a call.
I have seen it even on debug.



So the problem becomes an issue of the phone
> itself. What has the phone been programmed to do when "any" key has
> been pressed (regardless of whether its the # key or something else)?
>
> The discussion suggests the Grandstream phones have not been programmed
> to handle transfers. (I don't have one therefore I don't have a clue as
> to whether that happens to be the result of the vendor, or the person
> that has implemented the phone doesn't have the knowledge or documentation
> to do it.)
>
> If one purposefully configures asterisk to force all packet flows through
> asterisk (instead of allowing two phones to communicate directly), then
> you're burning asterisk cycles handling every single packet and that
> certainly has an impact on how many simultanous calls can be handled by
> the system. Your milage may vary.
>
>
>
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