[Asterisk-Users] call pick up and joining an active call

[Bruno Wolff III]

On Wed, Mar 23, 2005 at 13:00:57 -0600,
  Bruno Wolff III <bruno at wolff.to> wrote:
> 
> What I am wondering is if I could use the TDM431B to divide our phone lines
> into 3 groups to use as an intercom, but still have them work normally
> for answering calls and calling outside.

It looks like I do need a conference to mix 3 channels together.
There is a way to redirect a normal 2 party call to a conference.
So I think it will be possible to move an existing call over to a conference
using agi and a program that does the redirect. So that if a second person
picks up a phone after a call has already been answered, it should be possible
to make things look like their phone was connected directly to the phone
of the other person who already picked up.

There are a lot of details for me to work out later, but it looks like this
will be doable.