[asterisk-users] Hanging up a 3-way conference when middle user hangs up

[Lex Lethol]

As far as I know when I setup a 3-way on something like a cisco will
disconnect everyone when the middle (person who setup the conference)
hangs up.

The problem I describe happens on ATAs and the like that uses flash to
put on hold while setting up the second call.

I am not sure about other phones other than cisco, polycom and a few others.

Thanks!

Ed


On 1/7/07, Paul Hales <pdhales at optusnet.com.au> wrote:
>
> How does this compare to using the conference features on a SIP phone,
> say a Snom? I have used a Snom many times for an ad-hoc conference,
> without any troubles...
>
> PaulH
>
> On Sun, 2007-01-07 at 18:12 -0600, Lex Lethol wrote:
> > Apparently asterisk's default way to a 3-way conference lets the user
> > in the middle hangup and the other parties stay on the conversation.
> > This is great some times but it creates quite a bit of problems when
> > trunks dont have disconnect supervision or when trying to do
> > accounting and billing on the user.
> >
> > Here is the 'normal' situation when a user tries the setup a 3 way
> > conference once the user is already on the phone with someone he
> > called.
> >
> > 1.  Press 'Flash' on the phone. Party B will now be placed on hold and
> > you will hear a dial tone.
> > 2. Dial party C's number or a pre-configured speed dial followed by
> > '#', (you can engage in conversation).
> > 3. Press 'Flash' to join both C and B to a single conference.
> > 4. When you place the phone's handset on-hook, party B and party C
> > will remain in conversation.
> >
> > After step 4, B and C remain on the conversation and I am looking for
> > a way to disable this without disabling 3 way calling.  Basically I am
> > looking for a way to force asterisk hang up both B and C once the
> > 'middle' user hangs up so this will not leave channels stuck on trunks
> > without disconnect supervision.
> >
> > Anyone know how to accomplish this?  Any comments appreciated.
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