[asterisk-users] Call flows of conference

[Rob Hillis]

That's because A is the "joining" point between B and C.  If either B or
C hung up, the remaining party would still be left.

This is a phone function, not an Asterisk one.  From Asterisk's
perspective, phone A is simply on two simultaneous calls to B and C - it
has no idea that A is bridging the two calls together.


preethy varghese wrote:
> Hi,
>      I have an astrisk pbx installed on my system and i have
> registered  two  Aastra  hardphones  and one SJPhone(softphone) with
> that. Then i tested the following scenario
>
> A(Aastra)      called    B(Aastra)
>  
> B   answered the call
>
> I pressed conference button on the A  ( A   put   B   on   hold)
>
> A  called  C(SJPhone) (It send an invite with isfocus )
>
> C   answered   the  call
>
> I  pressed conference button on the A again
>
> A  B  and C came in conference mode.
>
> Then when I hangup the phone A , call between the B and C is also
> disconnected.
>
> Any one could you explain  me this scenario with the sip message
> sequence?
>
> What is the message sequence of a pbx centered  conference?
>
>  Thanks in advance.
>
> Preethy
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